How to properly charge a Bosch screwdriver

Should I charge before long-term storage??

If the device is not used for a long time, it should be wisely stored in order to prevent damage to the batteries.

Nickel-cadmium batteries are discharged before storage, but not completely, but partially, until the power is reduced. Before use, they are completely discharged and charged at least three times.

Nickel-metal hydride batteries are stored fully charged, and before starting to work with the tool, they are kept on charge for at least a day. After the device has passed 200-300 discharge-charge cycles, its capacity may partially decrease.

Lithium-ion batteries must not be fully discharged. this will disable the protective circuit. Keeps batteries up to 50 percent full. The number of discharging and charging cycles is not limited, but the duration of their service is no more than two years.

Features of charging different types of batteries

Several types of batteries are installed in screwdrivers. nickel-metal hydride, nickel-cadmium and lithium-ion. Each has unique features, and charging is carried out taking into account the recommendations for this type.

How to properly charge a new battery?

For Nickel Cadmium and Nickel Metal Hydride batteries, initial charging cycles are important to allow them to use their full capacity. Type 1 batteries must be fully discharged and then charged three times to reach their maximum capacity. Then they are charged only fully, the end of this process will be reported by indicators or warming of the case. Batteries of the second type require 4-5 full discharge and charge cycles. Then they are charged as needed, without waiting for a full discharge. However, discharge-charge cycles are regularly repeated 4-5 times to restore capacity.


The most popular type of battery, its advantages are compact size, low cost and high capacity. Withstands over a thousand recharge cycles, depending on the quality of the materials used in their manufacture, as well as compliance with the conditions of use.

This type of battery has a significant disadvantage. the memory effect. If you interrupt their charging before they are finished, the battery capacity will decrease over time. In addition, their production is very toxic, so some European countries have abandoned their use.

What is the optimal amount of time for charging?

Usually, the time it takes to fully charge the battery is reported in the instructions for the screwdriver. It is recommended that you adhere to these guidelines. Often, the memory is equipped with indicators that inform about the completion of the procedure and its end. They will help you figure out how long to keep the battery on charge. After completing the procedure, the battery is removed from the charger so as not to harm it.

Battery chargers are of two types. conventional and impulse. The former are designed for household screwdrivers and charge the battery for 3-7 hours. The latter are used on professional equipment and are able to restore capacity within 1 hour.

What to do if the battery does not recharge?

If the equipment does not charge, the reason is a failed battery or a damaged charger. Sometimes its terminals and the battery begin to interact poorly, to eliminate the memory problem, they disassemble and bend the contacts.

Sometimes during disassembly, it is found that the terminals are oxidized or dirty. To eliminate the problem, they are wiped with a special cleaning agent or alcohol.

If the capacity of nickel-cadmium batteries has significantly decreased, you can try to overclock them. To do this, they are disassembled, with the help of a multimeter, non-working elements are found and recharged with a higher current, after which they are discharged again. In this way, the capacity can be partially restored. Another solution is to disassemble the two battery packs, remove the faulty banks and connect the whole ones. After that, the restored device is charged and discharged several times.

Lithium ion

Batteries of this type are considered to be the best. They charge quickly, have no memory effect. Such batteries do not need to be fully discharged, and can be connected to the power supply as needed. The disadvantages include the high cost, as well as the fear of low temperatures.

The lithium-ion batteries of the screwdriver should be properly charged at a temperature of 10 to 40 ° C, and if they heat up during this processor, they should be cooled to prevent damage.

How to charge a screwdriver to extend its life?

The battery is an essential element of any cordless screwdriver. It makes the tool standalone and allows you to work in conditions where the use of mains-powered equipment is not possible. Knowing the rules for charging and operating the battery will increase its service life.

How to charge a Li-ion battery in a screwdriver

Brought 6 Makitov devices for repair a couple of weeks ago.

4 screwdrivers, 1 jigsaw and 1 sander.

Straight to the box. Severe.

They told me the price of the repair. It turned out that only one screwdriver made economic sense to restore. The rest went to spare parts.

In general, by itself the time has come to replace the fleet of hand-held battery tools.

So I bought new screwdrivers with Li-ion batteries for all carpenters at once.

Guys are used to Ni-cd batteries, and Li-ion requires a very different approach. Straight to the opposite.

And, of course, it’s not just about how to charge the Li-ion battery of a screwdriver. If it is not properly discharged and / or stored, there will be little good for it either.

Therefore, I looked at a couple of dozen sites and a couple of hours of video.

Threw out all the husks and made the most “dry” without “water” squeeze.

How to charge a Li-ion battery of a screwdriver and other important rules for its use

  • Remember —Li — ion is opposite to Ni — Cd!
  • Put Li-ion on charge already with a residual charge of 20-50%.
  • Important! Do not allow Li-ion discharge below 10-20%. This is a critical value. The smaller the discharge, the longer the Li-ion will work.
Depth of discharge Number of charge cycles
one hundred% 500
fifty% 1500
25% 2500
ten% 4700
  • Li-ion works optimally in the range from 10 to 45 ° C. Charge at a temperature of 10 to 30 ° C.
  • Once every 4 months, carry out a full discharge-charge cycle to calibrate the charge level sensor in the battery controllers. That is, discharge to almost 100% and put on charge for 12 hours.
  • You need to store Li-ion at a charge of 40-60%.
    It is impossible to store 100% charged Li-ion, since in this case it will permanently lose 20% of its capacity in 3 months.
    With proper storage. with a charge of 40-60%. Li-ion will irrevocably lose only 1% of its capacity in the same 3 months.
  • If the screwdriver is equipped with two Li-ion, then charge one up to 40-60% and store it as a backup. Use it as a worker once a month. charge to 100%, discharge to 40-60% and store again.
    The second Li-ion is the main worker. Have a job. at the end of each day, put it on recharge, even if it is less than 10% discharged.

Use a backup Li-ion if the main working Li-ion is discharged as a result of intensive work and there is no time to wait for its charging.

That’s all. Now you know how to charge a Li-ion battery for a screwdriver.

I handed this to every carpenter, and even hung it on the notice board in the workshop.

And there may still be a question. why did I switch from Ni-cd to Li-ion cordless screwdrivers?

Here are the advantages of Li-ion batteries over Ni-cd batteries:

  • at least 2 times higher specific capacity;
  • self-discharge is several times less;
  • no memory effect, which makes it possible to recharge at any time;
  • withstands on average twice as many “charge-discharge” cycles, that is, it will live twice as long.

Are there any disadvantages?

And finally, if you work professionally with a screwdriver. do not hesitate too much. it will crumble at the same time as the Li-ion battery. So you probably won’t have to buy a separate Li-ion battery.

Just with reasonable non-vandal use, a screwdriver should be enough for a couple of years.

And, yes, one more important rule. Do not skimp on the power of the screwdriver. It corresponds to the voltage of the battery. Take with a 20 volt Li-ion battery at least. Will twist like a beast.

And buy a weak one. there will be little use from him, and there will be no joy from a penny saving either.

In general, I took screwdrivers with 25 volt Li-ion batteries. The carpenters will not get enough of it. Especially after 14 volt Ni-cd.

Look like that’s it. If you still have questions, do not agree with something. write in the comments.

How to charge a screwdriver battery correctly

Using a mains-powered screwdriver is inconvenient, because the length of the cord may not be enough, and it itself often interferes. Therefore, devices with a removable AKM were invented. But before using them, you need to figure out how to charge the screwdriver battery correctly.

  • General rules for charging the battery of a screwdriver
  • If the battery is new
  • Features of charging different types of batteries
  • How long does it take to charge
  • Do I need to charge before long-term storage

If the battery is new

If the screwdriver has just been bought, first it must be fully charged, because when stored in a warehouse, the batteries in the tools sit down.

Subsequent nuances will vary greatly depending on the type of battery.

Features of charging different types of batteries

Differences in battery charging are related to the properties of the materials from which the battery is made. Devices for replenishing the capacity are impulse and conventional. The first are supplied with professional power tools, and the second come complete with household screwdrivers.

There are three types of batteries in total:

  • Nickel-cadmium. They have a pronounced memory effect. After purchase, they must be charged and discharged 3 times. Only in this way will the maximum battery capacity be achieved. Subsequent charging should be carried out only after the complete end of the charge.
  • Nickel metal hydride. Also have a memory effect. It is recommended to perform a similar procedure 4 times. Further recharging is carried out at random.
  • Lithium-ion. These batteries are the most unpretentious. They are capable of not changing their original capacity for a long time. You can charge them as you like.

properly, charge, bosch, screwdriver

How long does it take to charge

Some models have a light indicator that shows how many percent of the charge is replenished. At the end of the process, the battery must be immediately disconnected from the charger.

Charging time varies from 30 minutes to 6 hours, depending on the capacity of the battery and the power of the charger. Longer than others, energy is supplied to nickel-cadmium batteries. They charge for at least 3 hours.

General rules for charging the battery of a screwdriver

To properly recharge the instrument’s batteries, maintain the recommended ambient temperature. Air heated to 10-40 degrees is considered optimal.

There is a possibility that the battery pack will overheat. To prevent this from happening, the battery sometimes needs to be disconnected while charging to cool it down. After replenishing the capacity of the battery, you cannot leave it in the switched off charger or install it in a screwdriver, which is not currently planned to be used. Better to put them in the tool case.

Important! Batteries, which are rarely used, need to be recharged once a month.

You can find out how long it will take to recharge in the operating manual. In order for the tool to work for a long time, this requirement must be met.

Do I need to charge before long-term storage

It all depends on the type of batteries:

  • Lithium-ion. Such devices are stored with a 50% charge. They should be charged up to this value once or twice a month.
  • Nickel metal hydride. They need to be kept fully charged and sometimes replenished.
  • Nickel-cadmium. Store discharged until next use.

If the screwdriver stops charging, you should never disassemble the tool yourself, otherwise you may void the warranty. It is best to take the broken device to the service. Sometimes the instruction manual contains information on measures to be taken in such a situation.

Proper charging of the battery is the key to its proper operation. If you do not neglect the rules, new batteries will not be needed soon.

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Charger types

There are 2 types of battery charger for screwdrivers:

  • usual;
  • impulse.

Conventional chargers take 3-7 hours to fully charge the battery. Typically used with household screwdrivers where battery capacity is not consumed intensively and frequent battery charging is not required.

Impulse devices fully charge the battery in less than 1 hour. They are usually included with professional models with high power, which are used continuously for a long time and require a quick recharge of a replaceable battery.

Also, be sure to check the compatibility of the charger and your mains supply. The required voltage for the device must be spelled out in the instructions for it. If the indicators do not match and the voltage of the network itself is higher than necessary, then a transformer or adapter should be used to compensate for the imbalance. Otherwise, a short circuit may occur or the device will simply burn out. The presence of a fuse inside the device simply will not allow it to charge the battery.

How long does it take to charge the battery

Before charging the cordless drill or screwdriver, you need to determine how long it will take for this procedure. As a rule, the period is prescribed in the instructions attached to the instrument. Some battery models have an indicator light that indicates when the device is fully charged. After charging is complete, immediately disconnect the battery from the charger.

Typical charging times are between half an hour and 7 hours, depending on the type of battery and charger. Nickel-cadmium batteries are powered for the longest time. 3-7 hours.

The influence of external factors on the battery

This section provides detailed information on how to properly charge the screwdriver battery and use the equipment outdoors. Despite the fact that instructions are attached to each model of the screwdriver, there are general rules for using cordless tools outdoors:

  • The process of charging the battery should be carried out in a special temperature mode: from 10 0 to 35 0 C. It is undesirable to charge the battery in the cold at temperatures below 5 0 C.
  • Avoid moisture, such as rain or snow, or high humidity, that the instrument itself or the battery come into contact with. This can lead to the development of rust and poor electrical conductivity. In this case, you will have to buy a new device and spend time looking for a suitable battery.
  • Direct sunlight is also harmful to the battery and the entire instrument! Especially in summer when temperatures are high. This is fraught with overheating of the device and disruption of contacts, because as a result of high temperatures, metal ions begin to react with each other. This process is not immediately visible, over time you will find that charging has become slower, and the indicator will always show one position.

Battery types

The chemical composition of the device is one of the main characteristics that determines the type of charge. The metal used in the battery determines how to properly charge the screwdriver (correct sequence of the charge-discharge cycle), which prolongs the life of the device. All batteries in screwdrivers are of three types: lithium-ion, nickel-cadmium and nickel-metal hydride.

Nickel cadmium battery

The very first type of battery holds a charge for a long time and has a fairly good capacity. However, it has a memory effect that prohibits charging when the battery is not fully discharged. Therefore, frequent recharging is unacceptable, this leads to a reduction in the battery capacity. Before using for the first time, you also need to fully charge the battery first, and then start working with the tool.

Nickel-cadmium batteries are commonly used in budget-class screwdrivers due to their favorable price and optimal mode of infrequent use.

How to charge a screwdriver battery

The screwdriver is one of the most popular electrical tools for renovation and finishing work. This device can be found in almost every home and it is used for twisting fasteners or drilling holes of different diameters, it is used in work by both professionals at construction or installation sites and amateurs in home repairs.

All electric screwdrivers are divided into 2 types: mains and cordless. Mains receive power from a power source through an outlet and cable, and rechargeable ones. through a battery. In this article, we will only talk about cordless screwdrivers, namely, how to properly charge a screwdriver with a battery of one type or another.

Nickel metal hydride battery

This type has replaced nickel-cadmium, it is more environmentally friendly and lighter in weight. However, it does not perform well in quiet mode and can quickly deplete battery capacity. Therefore, it is advisable to put the unit on charge before each use and always take the charger with you.

Li-ion battery

It is considered one of the modern types using the latest technology. Differs in sufficient battery capacity. It has no memory effect and is designed for intensive and frequent use. Charges quickly with up to 1000 charge cycles.

However, lithium-ion models are expensive and work poorly at low temperatures: they discharge faster and give an unstable flow of energy. Store such batteries in a semi-discharged state and periodically recharge.

Storing the screwdriver battery

Devoid of memory effect: can be recharged at any stage. Do not allow a complete discharge. it turns off the protective controllers that prevent overloads. As a result, the device may not withstand intensive use, fail.

Before storage, the battery is discharged almost completely (to the state of an inoperative tool). To put the device away for long-term storage (more than 6 months), perform 3 to 5 full charge-discharge courses.

than other types are subject to rapid self-discharge. After a long storage period, you need to put the battery on the charger for at least a day in order to replenish the energy reserves. There is a decrease in capacity after 300 charge-discharge cycles.

How to properly charge the battery for a screwdriver?

The cordless tool is convenient in nature, in places where there is no stable permanent access to power supply. The absence of a cable allows you to avoid inconvenience with extension cords, fear of overloading the network, entanglement with wires, inability to crawl to hard-to-reach areas.

The operation of the cordless tool has its own characteristics. How to properly charge the battery without damaging it? What are they made of, how do they differ? Answers. in the article.

What types of batteries are there?

What types of batteries are used by screwdrivers?

  • Nickel cadmium (NiCd). The first type of devices, which keeps charging for a long time, is equipped with sufficient capacity. There is a memory effect that prohibits charging when the battery is not fully discharged. Therefore, frequent recharging is unacceptable, this leads to a reduction in the battery capacity. Before using for the first time, first fully charge the unit, then start using the tool. Nickel-cadmium are used with budget-class screwdrivers. They are cheap. Suitable for infrequent use.
  • Nickel metal hydride (NiMH). They replaced nickel-cadmium. environmentally friendly and weigh less. Worse keep charging when idle, which can quickly deplete battery capacity. It is advisable to recharge before each use, always take the charger with you.
  • Lithium-ion (Li-Ion). They are characterized by sufficient battery capacity. Free from memory effect, designed for intensive and regular use. They are quickly charged, cycles are up to 1000. They are distinguished by a relatively high cost. Discharges faster when operated at low temperatures, giving an unstable flow of energy. Store such batteries half-discharged, periodically replenishing capacity.

Screwdriver battery device

Main structural elements:

  • The case on which the contacts are located (connected to a charger or a power tool).
  • “Banks” (as a rule, there are several of them), united by a common chain.
  • For safe operation, there is a temperature sensor to prevent overheating.

Battery specifications for screwdrivers:

  • Voltage (V) is an indicator that characterizes the capabilities of the tool. It affects how difficult tasks can be accomplished with it. The voltage can be described as the equivalent of the power of network devices. The indicator is not constant: it reaches its peak when the battery is fully charged, gradually decreases during the discharge process. That is why it makes sense to perform work that requires a high impact force, at first.
  • Capacity characterizes how much energy the device stores. Affects the duration of work on a single charge. We must remember. one device with one battery will work for different times (depending on the complexity of the tasks).
  • Weight and dimensions affect how comfortable they are to use with the tool. It will be inconvenient to hold a device with a heavy battery for a long time, which will affect productivity and quality of work performed.
  • Additional functionality. The indicator reflects how much energy is left before a complete discharge. Useful to plan working hours. Some manufacturers produce batteries that are compatible with a wide variety of tools: trimmers, screwdrivers, power saws, jigsaws.

Charging methods without using a charger (non-standard methods)

NEED TO KNOW! We do not recommend using the information from this paragraph in practice. We provide for informational purposes.

There are non-standard methods on how to charge a screwdriver battery without a charger:

  • car charging,
  • universal charger,
  • external energy source.

The effectiveness of such actions can be justified if there is no proprietary charging. Safety questionable. recharge possible. We do not recommend using these methods. they can lead to malfunction, damage to the battery and are dangerous for the user. Purchase a branded battery of a brand similar to the screwdriver or suitable in terms of characteristics.

Features and rules for charging the battery of screwdrivers

The batteries are made from different materials. This affects the size, weight, the ability to drill at subzero temperatures, voltage, capacity, susceptibility to the memory effect. The latter especially affects the principle of charging a screwdriver.

The memory effect is the loss of capacity achieved by incomplete discharge of a battery. If you stop using the tool before it is completely discharged, the device will “remember” this and will not use the resource in full. Failure to properly handle the battery will reduce capacity.

Checking the battery condition with a multimeter

It will be helpful to determine the reason why the battery is not charging. The procedure will reveal the health of the batteries. Here are some easy-to-implement methods that you can use at home. Prepare the equipment: in addition to the multimeter, you will need tools for disassembling the battery (pliers, soldering iron, screwdriver, knife.

  • Check the battery on charging by taking readings at 30 minute intervals. The voltage should rise steadily until fully charged.
  • A quick method to check the condition of the battery. We measure U with no load. We compare the result with the real voltage and the number of elements. The indicators differ. the battery has non-working parts that need to be replaced.

How long does it take to charge the battery of the screwdriver?

Before charging the cordless drill or screwdriver, you need to determine how long it will take for this procedure. The period is prescribed in the instructions attached to the instrument. Some models have a light indication. it will show when the device is fully charged. After charging is complete, immediately disconnect the battery from the charger.

Typical charging times range from half an hour to 7 hours, depending on the type of battery and charger. Nickel-cadmium are fed with energy for the longest time. 3-7 hours.

Charging methods without using a dedicated charger

If for some reason the memory from the set is out of order, you can use a third-party device.

In this case, it is important to take into account the characteristics of the battery when selecting such a charger. Voltage and capacity must match. Otherwise, the battery could be damaged.

Interesting: The DF457DWE impact screwdriver comes with 2 batteries. If one is discharged, you can simply insert the second and continue working.

If there is no charger at all, there are three alternative methods.

Car charger

It is not necessary to use this method all the time due to the mismatch of the parameters. A car charger is suitable if it is equipped with voltage and voltage regulation elements. You just need to set the indicators correctly: the current is set as 0.5-0.1 of the total capacity of the battery.

External sources of electricity

The option described above also belongs to the category of external devices for charging the battery. Alternatively, you can connect the instrument to a different power source, such as an old battery, to act as a power bank. The main thing is that it is working and has identical parameters. But here remarkable knowledge of electrical engineering is required: it is necessary to create a chain with the help of crocodile adapters. You will need a 10 amp fuse, and you will also need to use oversized wiring.

Tip: if you need a power tool to work for a long time, it is better to select a model among professional options. Their batteries are much more powerful than household models.

Screwdriver battery device

The main components of power tool batteries:

  • the case on which the contacts are located;
  • thermistor, which is needed to protect against overheating (not all models have);
  • battery.

The main types of batteries and their features:

  • Nickel-cadmium. they are cheaper than others, they are lightweight. The downside is the memory effect. They need to be discharged to zero and charged to the end. If this is not done, the capacity will decrease.
  • Nickel metal hydride. This type has a less pronounced memory effect, therefore, such devices are more expensive. If the Ni-MH battery is idle for more than 30 days, a full recharge is required.
  • Lithium-ion. One of the most popular types. They do not work well in the cold: they discharge faster, and with regular use and storage at subzero temperatures, their service life is reduced. But otherwise, these batteries are better than others. The high cost of Li-Ion is fully justified by the speed of charging and impressive capacity, as well as the absence of the aforementioned memory effect.

Universal charger

An option that will fit almost any battery. Usually this is a model with crocodile clips. Often the user has the ability to set the required values. The method will not harm the battery, since the charging process will proceed in the same way as with the complete charger.

How to properly charge a screwdriver battery: 3 best ways to charge

This article explains how best to handle the cordless screwdriver in terms of charging and storage. The manual also tells you how you can recharge your power tool without the supplied charger.

How long does it take to charge the screwdriver

The indicator is individual. It varies from 30 minutes to 7 hours and depends on the capacity. Usually the time is written in the manuals for use.

Most chargers are equipped with an indication, so you can see how many percent are left until the end of the charge.


Among power tools, both household and professional, the screwdriver is one of the most demanded. With its help, you can not only twist and screw in self-tapping screws, but also drill holes. Mains-powered tools cannot be used always and everywhere, and the cord interferes with work all the time. Cordless screwdrivers are relieved of these disadvantages. With them, you can move freely and not depend on the presence of an outlet in the room.

An important element of every cordless tool is the battery, which allows you to work with it autonomously. This is very convenient, but sooner or later, each owner of such a power tool faces the question of how to charge the battery of a screwdriver.

Do I need to charge the batteries before storing?

If the cordless tool is not used for a long time, experts advise you to carefully consider the battery cells.

It is recommended to discharge nickel-cadmium batteries before storage, but not to zero, but to the point where the instrument stops working at full capacity. For long-term storage, to restore the capacity of the battery, it is necessary to carry out 3-5 complete cycles of its discharge and charge. During the operation of the tool, it is also advisable to ensure that the battery is not partially discharged before charging, but completely.

Nickel-metal hydride batteries have a higher self-discharge rate than previous cells. They are recommended to be kept charged, and after a long “rest” to charge for about a day. Partial discharge is preferable for this type of battery. Their capacity decreases after 2-3 hundred charge-discharge cycles.

Lithium-ion batteries, which have no memory effect, can be charged at any time, whatever the degree of discharge. These batteries have the lowest self-discharge rate at a high capacity. It is not recommended to fully discharge them, as this may disable the protective circuit. Power tools with such batteries are equipped with control electronics that disconnect the cell from the load when the temperature or voltage rises. It is recommended that these batteries be kept 50 percent charged. The number of charge-discharge cycles does not affect the capacitive characteristics of the cells, however, their life is limited by time and is about two years.

  • Types of batteries used to operate the screwdriver
  • Battery charging features
  • How long does it take to charge the batteries of the screwdriver?
  • Do I need to charge the batteries before storing?
  • What to do if the screwdriver battery does not charge?

Types of batteries used to operate the screwdriver

Before purchasing new batteries for the screwdriver, you must carefully study the instructions for the device. The tools required for work can be professional, household and semi-professional. Batteries for them differ from each other in capacity, quality and price.

For certain jobs, certain types of cordless tools are also intended, designed for different loads, therefore, different batteries are needed for them. The higher the power rating of the battery, the longer it can work. For convenience, it is better to have two batteries so that you can recharge the second when working with one. Often a second battery is already included when the instrument is sold.

Various types of batteries can be used for screwdrivers. The most commonly used nickel-cadmium (Ni-Cd) and nickel-metal hydride (Ni-MH), and more recently also lithium-ion (Li-Ion).

The most common of these are nickel-cadmium batteries, which are compact in size, large in capacity and at an affordable price. These batteries can be effectively charged over a thousand times, depending on their design, material purity, operating mode, including correct charging. However, these devices have a so-called memory effect, and if you charge them without waiting for a full discharge, the battery capacity will gradually decrease. In addition, the production of such elements is so toxic that the European Union abandoned it on its territory.

In second place in terms of frequency of use are nickel-metal hydride rechargeable batteries, representing a new generation of similar devices. From an environmental point of view, both the production and disposal of these batteries are practically safe. The advantages of batteries of this type include the fact that they have less pronounced memory effect, and the disadvantages. high self-discharge current. These batteries must be kept charged and fully recharged when not in use for more than a month.

recently, more powerful lithium-ion batteries have been used for cordless tools. They also do not have such a disadvantage as the memory effect, which requires periodic discharge cycles to restore capacity. However, these batteries do not tolerate low temperatures well, and it is undesirable to work with them in cold weather. Despite the fast charge and high capacity, they are not very popular yet, as their price is quite high.

Battery charging features

How to properly charge a screwdriver battery so that it lasts as long as possible?

Batteries need to be charged before using them for the first time as they discharge during storage. In order for the battery capacity of the screwdriver to become the maximum possible for the nickel-cadmium cell, it is recommended to charge it three times and then discharge it. Thus, since the new battery has incomplete capacity, it must be brought to full working capacity. After that, the batteries will need to be charged as soon as their capacity becomes minimum. Lithium-ion batteries are easier to use. They do not have a memory effect, so you can not bring them to full discharge and charge when it is convenient.

When charging, you need to take into account the optimal temperature regime of the process. It is better that the ambient temperature is above ten degrees and does not exceed forty. Batteries sometimes get warm during charging, but this should not be the case, as overheating adversely affects their performance, and they need to be cooled. It is undesirable to leave batteries in the charger. Yes, and it is better to store them by disconnecting them from the screwdriver, separately from the tool itself. If the batteries are not used for a long time, they should be recharged once a month.

It is better to buy rechargeable batteries at specialized points of sale. Correct use will help increase their service life. During operation, it is undesirable to discharge the elements completely until the engine stops. They will need to be charged as indicated by their markedly reduced performance.

How long does it take to charge the batteries of the screwdriver?

As a rule, the charging time of the screwdriver battery is indicated in the instructions for the tool. These recommendations should be carefully followed. Often the charger has a special display system to help you understand how the charging process is going. Thanks to this, you can easily determine with how much to charge the battery of the screwdriver. When charging is complete, you need to interrupt it in time so as not to damage the batteries. On average, the charger battery for a screwdriver can recharge from about half an hour to 7 hours. Practice shows that a Ni-Cd battery with a capacity of 1.2 Ah is charged with a current of 250 mA for about seven hours. Charging current is maintained using the mains adapter.

It should be borne in mind that there are two types of battery chargers. conventional and impulse. A standard conventional charger is more often used in a non-professional tool, it charges the battery in about 3-7 hours. Pulse. more suitable for professional mechanisms. Thanks to it, the battery performance can be restored in a maximum of an hour.

What to do if the screwdriver battery does not charge?

If the battery of the screwdriver does not charge, perhaps the reason is to look for its deterioration or in the malfunctioning of the charger. However, often the problem lies in the disruption of contact between the battery terminals of the screwdriver and the charger, as they unbend over time. In this case, you can disassemble the charger and bend its terminals.

In addition, after some time of use, both the battery contacts and the charger contacts may oxidize and become dirty. Even minor changes of this kind can prevent the batteries from charging properly. This usually translates into a significant reduction in both the charging time and the operating time of the cordless power tool itself. To avoid this, you need to periodically wipe the contacts of the battery, the charger for the battery of the screwdriver and the tool.

Unfortunately, battery cell performance degrades over time. So, with improper use of nickel-cadmium batteries, most often used in household screwdriver models, they quickly lose capacity. Experts sometimes advise to “overclock” such batteries. The battery pack is disassembled and problematic items are identified. After that, they need to be charged. What current to charge the screwdriver battery in this case? Experts recommend that you first charge such elements with a higher current than it should be, then discharge them and charge them again, but with a small current. If the electrolyte has not yet evaporated in Ni-Cd batteries, this “therapy” may help bring them back to life.

In addition, you can restore one battery pack from two that have partially lost their capacity by selecting from them and soldering together whole “banks”. After that, to equalize the charge, it is required to fully charge and discharge the recovered unit several times.

Also, the reason is that the battery does not charge, it may be in the temperature sensor.

»How to charge correctly


Household-class cordless drills are equipped with the simplest charger, it does not turn off after the battery is fully charged, does not have a charging indication. The battery through this type of charger is charged strictly in time (3, maximum 6 hours), in

Otherwise, the charger itself will fail due to overheating and can significantly damage the battery. The chargers for screwdrivers of the PREMIUM class (HAMMER, SKIL) charge the battery in 1 hour and turn off after the charging cycle, which is an indisputable advantage of the PREMIUM class.
Professional screwdrivers have smarter chargers. they not only have an indication of the state of charge of the battery, but also turn off after a full charge. Since batteries can be used in different weather conditions, chargers of some companies can also monitor the temperature regime for optimal charging, (while remaining in standby mode, first raise or lower the temperature of the battery itself, and then proceed directly to charging), show the degree of battery wear (MAKITA ), have air cooling. a built-in fan, which in

the charging process cools not only the charger, but also the battery itself (HITACHI), since during the charging process the battery tends to heat up.
Charging time in the memory of professional screwdrivers is on average about 1 hour. At METABO, the number in the charger model name means the battery charging time. Li-Ion. technologies made it possible to develop a charger with a charging time of only half an hour (BOSCH), and 15 minutes after the start of charging, the battery is already 75% charged.
When using the charger, special attention should be paid to the integrity and cleanliness of the contacts, the absence of dirt in the ventilation holes. It is allowed to use the charger only indoors.

Reprinting of materials is prohibited

How to properly charge the battery of a hitachi screwdriver

Specifications and equipment:

Food 12 Volts
The screwdriver comes in a handy case
Number of batteries 2
Convenient charger that shows when the battery is charged
Convenient folding lantern powered by the same batteries
Small case with bats
Torque 26Nm
Battery capacity 1.3 Ampere / hour
Boost battery charging 30 minutes

So why is this Hitachi screwdriver model so popular? In fact, there are a lot of advantages here, let’s figure it out.

The screwdriver is very light and compact, if you work with it all day, then convenience and weight are critical. That is why it is so loved by finishers and craftsmen who work with a screwdriver all day long. Lies in the hand like a glove.

Accelerated charging only half an hour. Of course, the first 3-4 times it will be charged for about an hour, and then the charging speed will increase. Very convenient, no need to wait 3 hours like other models.

Two batteries which means there will be no downtime as long as you work alone the second is charging. And it charges so quickly.

The rubberized housing really protects against damage from falls. Recently, a familiar finisher came in, got into a conversation, so they all without exception work with Hitachi screwdrivers, accidentally dropped from 2 meters shura just bounces on the floor. I picked it up, inserted the dropped battery and then you work. Other models have also dropped, in particular Bosch, it is not rubberized splits.

Decent grade a set of bits and even a flashlight powered by the same batteries. The thing is convenient and useful.

Convenient charger shows with the help of diodes that charging is in progress and that the battery is charged.

High torque 26 Nm, 3 times more than that of household models, which means that such a small screwdriver can even twist roofing screws. By the way, all professional models have high torque compared to household ones. I recommend that you read my article how to choose a screwdriver.
Torque adjustment is convenient, everything is clearly visible and understandable.

Bosch GSR 120-Li | Best cordless Drill For DIY Work

2 speeds, so that in addition to screwing the screws, you can drill something, especially the tile is very convenient to drill.

And of course. Makita and Bosch with the same characteristics are more expensive by at least 1000 rubles.


MMCRacer ›Blog› Conversion of the screwdriver battery to Li-ion. Down with NiCd! (Update 09.22.15)

We make a blank for the contact pad. I left all the thermistors at the factory, only extended the wires.

We mark the place of the inset of the display of the voltmeter, balanced connector and mikrik.

The display had to be cut off one ear

Insert and secure with hot melt glue.

We mount the battery, and solder the balanced connector and power wires to it. I soldered the display with the button in the gap directly to the and. contact pad.
The contact pad is also fixed on hot melt glue.

And what is not a bomb. )

To check the current voltage, just press the button. The estimated minimum is 15 V or 3V per can, but at this voltage the screwdriver will not turn normally, so the risk of over-discharge is minimized.

Periodic cans can be checked using Voltage Alarm.

We lay all the wires and close the case.

We get 2 excellent batteries.


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How to properly charge the battery of a screwdriver

A screwdriver is an electric tool that is designed not only for twisting or unscrewing screws, screws and other fasteners, but also for drilling holes. The device, which operates from the mains, can not be used in all places, and in addition, it is not very convenient to work with such a device, since the cord interferes all the time. To save yourself from these shortcomings, you need to purchase a screwdriver with a rechargeable battery. With such equipment, you can perform work in any place and not depend on the presence of an outlet in the house.

The main element of such screwdrivers is the battery, which allows the device to function autonomously. However, after a certain time, each user of such a tool will have a question about how to properly charge the screwdriver battery, and how long to charge the screwdriver battery.

Next, we will talk about what a screwdriver with a battery is, how you need to charge the battery, how much the screwdriver’s battery is charged, what are the features of charging the screwdriver’s battery, how to charge the screwdriver’s battery without a charger, and also how to check the battery charge level.

Screwdriver battery device

The battery is a chemical source of current for power-independent screwdrivers, in which the energy of a chemical reaction is repeatedly converted into electricity. Due to this, the storage battery is able to store electrical energy and store it for a long time. During charging, the battery accumulates electricity, and during discharging it gives it to the consumer.

The main components of the device:

  • The housing on which the contacts are located for connecting to a charger or to power tools.
  • “Banks”, which are connected by a chain.
  • Temperature sensor that protects the device from overheating.

Screwdriver battery specifications:

  • Voltage. This is a parameter that characterizes the capabilities of the device. It will determine the complexity of the task you can perform. The voltage value is not constant: the highest value is at 100% battery charge, and it gradually decreases during battery discharge. Therefore, complex work is best done with a high battery charge level.
  • Energy intensity. It indicates the amount of energy accumulated by the device. Affects the duration of the operation of the device. But you need to know that the operating time of the product depends on the complexity of the work performed, so a device with one battery can function for different times.
  • Weight and dimensions. These parameters affect the usability of the device. A tool that has a large and at the same time heavy battery cannot be held in weight for a long time, which will affect the efficiency of work.
  • Charge indicator. It indicates the charge level and helps you know when to charge the battery.
    Nuances of charging various types of batteries

In screwdrivers, there are different types of batteries. nickel-metal hydride, nickel-cadmium and lithium-ion. Each type has its own nuances, so you need to recharge taking into account the recommendations for a particular type.

  • Nickel-cadmium. The most common type of battery, its advantages are small size, price and significant energy consumption. In addition, this type can withstand a large number of charge and discharge cycles, about 1000. But this battery has one drawback. the memory effect. Therefore, if the ni-cd battery is not fully discharged or charged, its energy consumption will gradually decrease. In addition, the manufacture of nickel-cadmium batteries has a very bad effect on the environment due to toxic emissions, for this reason, some countries have abandoned the use of this type of battery.
  • Nickel metal hydride. This type of battery also has a memory effect, but in them it is manifested to a lesser extent compared to the previous type. For new batteries, a full charge and discharge cycle must be performed 5 times. And in the future, charging is carried out as needed. The main advantage of this type is that their production is safe for the environment.
  • Lithium ion. Batteries of this type are much better than their predecessors. They charge quickly and have no memory effect. Such batteries do not need to be fully discharged, and you can connect to the charger as needed. The disadvantages of the battery include a high price and poor tolerance to low temperatures. Lithium-ion batteries from a screwdriver must be recharged at a temperature of 10˚C to 40˚C.

In addition to the types, you also need to know how much time to charge the battery. As a rule, the duration of recharging the battery of a screwdriver is noted in the instructions for the device. It is necessary to carefully study it and adhere to all recommendations. Usually the charger has a charge indicator that allows you to find out how the charging process is going. With the help of this element, it will not be difficult to determine how long it takes to recharge. As a rule, the charger charges the battery from 1.5 hours to 7 hours.

But it must be borne in mind that there are 2 types of battery chargers. regular and impulse. A conventional charger is used in a non-professional device, it recharges the battery in 3 hours-7 hours. The pulse charger is used in professional tools. With this type, the restoration of capacity takes place from one hour.

Charging methods without using a dedicated charger

How to charge a screwdriver battery without a charger? If there is no original charger, then you can use non-standard methods that allow you to recharge the battery of a screwdriver without using a special charger:

  • charging from the car;
  • universal charger;
  • external source of electrical energy.

It is better to recharge the battery from a car with a product that has the ability to adjust the value of voltage and current. The most important thing with this kind of charging is to prevent overcharging. To do this, you need to set the correct amperage. For example, if the capacity is 1.3Ah, then the current value should be from 650mA to 130mA.

Universal chargers are comfortable in practice. They have a lot of extras. elements that help to choose the best current indicators for charging the battery from various electric tools.

External sources of electrical energy are used, as a rule, for old devices, for which it is economically unprofitable to buy new batteries. In these cases, the electric tool is improved in a certain way with the manufacture of the correct connection diagram.

Checking the battery status with a multimeter

If the battery for the screwdriver is quickly discharged or does not work, then you do not need to go right away to buy a new battery. You can find out the reason for the inoperability yourself. This will require a tester or other similar device. In addition, you will need the following tools:

  • soldering iron;
  • pliers;
  • screwdriver;
  • a knife.

To find out the cause of the battery malfunction, you must first make sure that the charger is working. This is done as follows:

  • include multimer;
  • put the device in constant voltage mode;
  • connect the probes to the corresponding sockets;
  • compare the obtained data with the nominal ones, which are indicated in the instructions;
  • if the indicators are different, then the adapter is taken for repair or a new one is purchased.

To make sure the battery is working properly, do the following:

  • recharge the battery up to 100%;
  • check the output voltage of the battery with a measuring device;
  • if the nominal data does not match the current one, then the joint stock bank is disassembled and all banks are taken out;
  • if there are no faulty banks visually, then in this case they check the output voltage, but before that you need to unsolder the circuit with a soldering iron;
  • to the banks alternately connect additional. load at the same time, and which bank has the largest voltage drawdown, then that one is inoperative.

In addition, when checking the battery, it must be borne in mind that for nickel batteries, the output voltage should be from 1.2 volts to 1.4 volts, and for lithium batteries. from 3.6 volts to 3.8 volts. Having found a non-working jar, you need to change it to a new one.

Lithium ion (Li-ion) and polymer (Li-pol)

Store half discharged, 40-50% charged. The lower the storage temperature, the lower the self-discharge current.

How to store the battery. charged or discharged

Important! The general recommendation for all batteries is to store in a cool place, at an air temperature of 10. 15 °. Charge at 10. 20 °. Different types of batteries should be stored at different charge levels.

How long does it take to fully charge

How long does it take to charge the screwdriver battery? It should be clarified for what purpose it is being charged. Manufacturers are looking to speed up charging times to reduce interruptions and increase competition. Therefore, the maximum permissible values ​​of the charging current are set. Often they sacrifice 10-20% of the charge at the end of the charging cycle.

This can be seen on the graph of the charge of the lithium battery. Where, in the first hour of charging, 70% of the capacity is recruited, in the second hour. another 20%, which is already 90%, and the set of the last 10% takes another 1 hour, only 3 hours. A standard charger “Bosch” from China charges a lithium battery in just 30 minutes. Taking into account these subtleties, now you can answer the question asked.

The battery only needs to be charged once to operate the tool. If necessary, you do not have to wait for the end of the charging time, and after half the standard charging time, you can start working. Undercharging of batteries in isolated cases does not bear negative consequences.

Bosch 12V Max Batteries – Is Bosch Over Charging?

To carry out training cycles, the maximum battery charge is required, and even more so to restore its capacity. How to do this on a standard charger if it automatically turns off? After the voltage stabilizes, after 20-30 minutes you can continue charging the battery on the standard device again. He will take another amount of energy. The charge cycle should be carried out up to three times. This will charge the battery to almost 100%. It is important that the entire volume of electrolyte is used in the subsequent training discharge cycle.

New Ni-Cd and Ni-MH cells are charged on a standard device from 1 to 8 hours, according to the passports of different manufacturers. This variation in time is caused by different settings for the value of the charging current, depending on the position of the manufacturer in this matter. In addition, chargers of even one manufacturer can have a spread of up to 2 hours due to an error in settings, because at the final stage of charging, the current decreases extremely slowly. And the minimum current will always be.

Specialist in repair, maintenance of electrical equipment and industrial electronics.

Advice! During long-term use of the screwdriver, the actual capacity decreases. It is useful to measure the charging time of new batteries after training and record them on the case. Comparing with the subsequent charge time after a year or two, you can understand how much of the capacity the battery has lost.

New lithium (Li) batteries take between 30 minutes and 120 minutes to charge. This also depends on the charger settings for each manufacturer.

How to properly charge a new battery the first time and during exercise

How to charge the screwdriver for the first time after purchase? Many manufacturers of lithium battery (Li) screwdrivers recommend that you simply fully charge the cell before using it for the first time. Few recommend doing 3 training cycles. discharge-charge. In general, for lithium batteries, a training cycle will be beneficial.

Attention! For new nickel batteries, both Cd and MH, all manufacturers strongly recommend training at least three times. And what is very important. first discharge, and then charge.

Unfortunately, none of the manufacturers, not even Bosch, writes how to properly discharge the battery during training cycles. Why this is important has already been said above.

If a power tool with Ni-Cd and Ni-MH batteries is protected against deep discharge, then discharge it before turning off the screwdriver. If there is no protection, then to the minimum voltage level. This is 0.9 V for each battery in the battery.

Screwdrivers on lithium batteries definitely have protection against deep discharge, but it will be useful to know that the minimum voltage should be at least 2.8 V. Below this threshold, the destruction of lithium cells occurs. Manufacturers insure themselves and set a cut-off limit of 3.2-3 V.

Summarizing all of the above in this article, we will outline the procedure for conducting training cycles that are useful for a new battery. It is recommended to carry out such a cycle at least once every 6 months, preferably more often.

  • Discharge the battery with a current of 0.1 of its capacity, or with the current of a working tool without load, with alternating operating time and pause for 3 minutes.
  • Charge the battery before disconnecting the charger.
  • Wait 20-30 minutes.
  • Charge again before disconnecting the charger.
  • Wait 20-30 minutes again.
  • Charge a third time before unplugging the charger.
  • Wait 20-30 minutes for the voltage to stabilize.
  • Now discharge in the manner described in p. 1.
  • Repeat pp. 1-8 up to three times.
  • Recharge or fully charge for storage, taking into account the type of battery. If the tool is to be used in the near future, charge it fully before disconnecting the charger.

Battery charging recommendations from manufacturers: Sturm (Ni-Cd), RedVerg (Li-ion), Hammer (Ni-Cd)

Nickel Metal Hydride (Ni-MH) batteries

Ni-MH power supplies have been around since 1980. The developers tried to reduce the “memory effect” of nickel batteries, and they almost succeeded. However, the self-discharge of the element almost doubled. At the same time, a deep discharge became destructive for them. The number of charge-discharge cycles for metal hydride is slightly less.

It is impossible to try to revive them with a deep discharge. The best way for Ni-MH power supplies is through charge and discharge training cycles. With regular use, they will perform much more charge and discharge cycles than with prolonged storage. Therefore, Ni-MH batteries are used for professional tools that regularly participate in the work. Such power supplies are not suitable for rare household use.

Bosch IXO 3.6V Changing the battery of the charged screwdriver. – Bosch IXO 3.6V Batarya değişimi.

Nickel-cadmium batteries (Ni-Cd)

Ni-Cd batteries have been in serial production since the middle of the last century. Able to tolerate a very deep discharge. But this does not mean that they need to be discharged to zero in terms of residual voltage.

Nickel-cadmium batteries (Ni-Cd) have a “memory effect” of the lower discharge value due to irreversible chemical processes. It consists in the fact that if the battery is not completely discharged and charged, then it will give as much energy as it received when charging. The effect does not occur immediately, but with regular under-discharge, the capacity decrease will occur quickly.

It is recommended to charge the battery with a current equal to its capacity. 1 C (where C is the capacity of the battery). In this case, it will reach its maximum capacity. Standard chargers are charged with a current from 1.0 C to 0.2 C. A further decrease in the charging current leads to a decrease in capacity.

A discharge with low currents, on the contrary, allows the battery to give maximum energy. Therefore, to restore the capacity of the Ni-Cd source, it is useful during training cycles to limit the discharge current to 0.1 C. If this is unacceptable due to lack of time (0.1 C is a 10 hour discharge), then you need to discharge with a screwdriver at idle in cycles : discharge, pause, discharge, pause. The optimal discharge and pause time is 3-5 minutes. During the pause, the cell will recover its charge. The more he will restore and give, the more he will take.

Nickel-cadmium (Ni-Cd)

Stored in a discharged state. The charge level is close to 10-20%. It is caused by the presence of a self-discharge current and the memory effect, taking into account that a deep discharge is not very harmful. In the discharged state, the self-discharge current is minimal. After storage, completely discharge and then fully charge before use.

How to properly charge new lithium-ion batteries in a screwdriver?

At one time, I also asked this question and one wonderful thought came to my mind: “Why not look in the operating instructions for any screwdriver?” With this “brilliant” thought, I took the instruction from Makita and. found in it only general words. Well, this is about what you need to store so that the battery contacts cannot be accidentally closed with a paper clip, coin or other metal object, that storage should be in conditions where the air temperature does not exceed 50 degrees, and the like, which is also of course important. but it seems clear.

And everyone is interested in about the following questions:

  • with what level of charge should the batteries be left for storage?
  • both of them must be removed from the screwdriver or one can be left inserted?
  • how long can you store without recharging?

As a result, after reviewing the instructions from different manufacturers, I was able to find some useful information. over, even if you look in the instructions of different screwdrivers of the same manufacturer, but differing in the type of battery, then it will be the same. At the same time, if the manufacturer believes that it is necessary to indicate some special information for certain types of batteries, then it is indicated, but in general for all types the conditions are basically the same.

For example, here is what AEG writes:

And here is information from DeWalt:

Or Makita, for any type of battery, gives a universal advice, to recharge the batteries every six months of storage if they have been idle for so long.

In general, what can you say based on the information provided by the manufacturers? Let’s go in order.

How to properly charge a screwdriver

The screwdriver is one of the most demanded tools used by professionals and amateurs. Using power screwdrivers is not always convenient, especially if you are away from 220 V. With a cordless tool, this problem is solved, you can move freely with it without dragging the cord along.

One of the main elements of any cordless tool is the battery, which ensures autonomous operation. But what is the correct way to charge the battery in order for it to last as long as possible? Further in detail in the article.

Should I charge before long-term storage??

Don’t use a screwdriver battery for a long time? Experts give the following recommendations.

  • Nickel-cadmium batteries, before storing, must be discharged to the point where the screwdriver ceases to function at full strength. For long-term storage, it is necessary to carry out 3-5 full circles of charging / discharging.
  • Nickel-metal hydride ones are provided with a higher self-discharge value, in contrast to the previous elements. Experts advise keeping them charged, and after a long break, put them on charge for a day. The capacity decreases after 200-300 charge-discharge cycles. Partial discharge allowed for this type.
  • Lithium-ion devices are distinguished by the complete absence of the “memory effect”. The battery can be charged whenever you want. It is not recommended to completely discharge them, as a result, you can disable the protective circuit. Equipped with special controllers that switch off the element at high temperatures to prevent overload. You can keep the cell charged only 50%.

Battery types

In order for the battery to last a long time “like a clock”, you must first familiarize yourself with the instructions supplied with the device. It should be noted that screwdrivers differ not only in price, power, manufacturer, but are also divided into professional and semi-professional. Accordingly, batteries will also have different prices, quality and charge capacity. Professional types are equipped with more capacious power supplies, which will cost a level more, but will also last longer than normal ones. Manufacturers use various batteries in the manufacture of their devices, each of which is endowed with certain parameters and features that should be taken into account during recharging. Screwdriver batteries can be classified into the following types:

Lithium Li-Ion

They are considered the most powerful batteries. They charge quickly enough, and they also have a complete lack of memory effect. Recharging this type of battery is easy. There is no need to recharge it after a complete discharge, it is allowed to recharge as needed. The high cost and intolerance to low temperatures discourage many people from buying, so they are not too in demand. Charge batteries at temperatures between 10 ° C and 40 ° C. If the battery heats up during charging, it must be cooled to avoid further damage.

Nickel-cadmium Ni-Cd

Nickel-cadmium battery is endowed with compact dimensions and large capacity. By following the attached instructions, they can be recharged more than 1000 times. There is a memory effect, if you charge it before a full discharge occurs, this can reduce energy consumption. Before the first use, you need to charge and discharge the battery at least three times. In the future, it is also recommended to completely discharge and charge the device, this will make it possible to bring the capacity to the required operating state. The same rule applies when storing the instrument.

Nickel Metal Hydride Ni-MH

They belong to the newest generation of batteries, for this reason, the memory effect is somewhat weaker than the previous version, which is an undoubted advantage. The disadvantage of the NMGB is the highest self-discharge current. In order for the battery to function for a long time, it must be kept charged. In case of long-term non-use of the screwdriver (about a month), it must be completely recharged.

As you can see, each rechargeable battery is endowed with characteristic features, given which, it will be possible to properly charge the screwdriver.

Features of charging one type or another

The initial charging of the screwdriver is considered a very significant factor, since it depends on it whether the full capacity of the charge becomes active or not. Any type of battery has its own characteristic features of primary recharging. The process of recharging a nickel-cadmium battery is somewhat complicated. Initially, it needs to be recharged three times in a row, and so that the charge capacity remains full.

It is recommended that the nickel-metal hydride species be completely discharged the first time, and also fully charged. The circle of full charging / discharging is repeated 4-5 times, then you can safely charge and discharge the battery regardless of the full capacity.

There are no special rules for lithium-ion, the capacity remains unchanged for a long time.

Advice! Do not allow the power source to overheat over 50 degrees.

What is the optimal amount of time for charging?

The recharging period is usually indicated in the device manual. In most cases, the device has a special indicator that helps you understand how long it takes to charge. After charging is complete, disconnect it to avoid damaging the batteries. The average charge for a screwdriver is between 30 minutes and seven hours. Longest period for Ni-Cd 1.2 V, 250 mA feed approximately seven hours.

There are also two types of battery chargers: ordinary and impulse. Standard charging is most often completed with non-professional tools, the charge lasts about 3-7 hours. The impulse device is designed for professional models and is able to power the battery in a maximum of 1 hour.

Advice: The Interskol screwdriver is distinguished by its versatility, besides the main function, it can also be used as a drill.

What to do if the battery does not charge? (2 videos)

The reason may lie both in wear and tear and in the breakdown of the device. It often happens that the contacts between the terminals of the charger and the battery are broken. Then you can independently disassemble the “charging” and bend the terminals.

As you know, all contacts oxidize and get dirty over time; this is no exception for a screwdriver with a charger. This usually results in a significant reduction in charging time as well as in the duration of the power tool’s activity. To eliminate the oxide, you need to gently wipe the contacts with a special substance or, in extreme cases, with alcohol.

Very often nickel-cadmium batteries lose their capacity, especially when it comes to non-professional models. Experienced users prefer to overclock these batteries. First, the battery pack is disassembled and problem areas are found. Then they need to be recharged. It is better to immediately use a higher current than it should be, and then discharge it again. If the Ni-Cd still has electrolyte, the procedure can restart the power supply.

And some connoisseurs even use a car charger to recharge the battery.