How to restore a battery on a screwdriver

How to restore a screwdriver battery at home

Can all types of batteries be reanimated? Nickel-cadmium blocks, which are found in almost all modern screwdrivers, lend themselves better to repair.

For the recovery process, you must understand the basics of electricity. That is, to have school knowledge about the operation of batteries.

To work you will need tools and materials:

How to revive dead NiCd battery from cordless power tools

• screwdriver;
• tester;
• soldering iron;
• tin (with low corrosive flux).

You will need a donor to resuscitate the battery. In the complete set of a screwdriver, it may be available, or you need to find it yourself, for example, by removing it from another old device.

To start the operation, you need to fully charge (about 6 hours) both batteries, swing it. Then remove the plastic cover from the part to be restored using a screwdriver. This procedure must be done carefully so as not to damage the clips. Otherwise, for subsequent assembly, you will need glue, like “Moment”.

The battery on the screwdriver runs out quickly

The problem with fast self-discharge of the battery is quite common. It consists in fast charging, which takes about 20 minutes and the same short work.

This situation can be the result of incorrect operation of the thermal sensor located in the removable battery. This thermal sensor may not be installed as originally. You must return it to the place of purchase.

If the battery begins to discharge quickly after prolonged uninterrupted use, which could happen after a fall, you need to take on its repair.

Battery does not charge

The screwdriver, after prolonged use, sometimes fails. Its working element may stop charging, which will lead to the impossibility of fulfilling the functional capabilities of the instrument, the instrument, roughly speaking, will “die”.

In order to extend the life of the instrument, so that you do not have to remove it from the field of view, you can try three methods in turn. Each subsequent one is considered more complicated and costly. They consist in:

• restoration and increase of capacity after its reversible loss (memory effect);
• adding distilled water to the electrolyte;
• replacing some or all of the battery packs.

Restoration of the 18 volt screwdriver battery

18 V is a common power, which corresponds to the presence of 15 units. As a donor, you need to choose an electrical appliance with a voltage of 14.5 V, that is, a 12 V car battery will not work.

Refurbishment of nickel-cadmium batteries for screwdrivers

The ni cd battery device is manufactured using the same technology, so any battery can be donated of this type.

Such devices are separate components. blocks, with a nominal voltage of 1.2 V and an energy capacity of 1200-1500 MA / h. They are found in Interskol screwdrivers. Each unit affects the power, that is, with its value of 12 V, the number of units is 10, 14.4 V. 12, etc. After changing the battery, the power may drop for the first time of operation, but then everything will be restored.

Restoring the battery of the screwdriver

Almost every battery in a power tool is the most expensive part. The screwdriver is no exception, because a replaceable battery can make up 30% of the total cost of the tool. After the device is discharged, it is necessary to purchase a new screwdriver, but to save finances there is another option. restoration, which will extend its service life.

How to repair and start a lithium-ion battery

For these types of batteries, you need to remember where the positive, negative and charging contacts are located. The voltage control board located on the batteries most often fails, or rather, their stabilizers and protective diodes.

The voltage at the output of the battery is checked, if the value is significantly less than normal, resuscitation is performed.

Battery life for screwdriver

A battery can last for about three to four years if properly used and stored. In practice, this period is sometimes reduced to two years. It is very expensive to constantly change the tool, so it is better to choose the best option right away for certain purposes.

There are 3 different types of batteries:

• Nickel-cadmium. Most affordable, but short-lived, especially with frequent operation in cold weather conditions.
• Nickel metal hydride. Small device that does not have a long service life.
• Lithium-ion. The most demanded, they are capable of not being discharged for a long time, but they have a higher cost than the above options.

Regardless of the type of battery, battery life depends on the number of charges used and storage methods. That is, the more the tool works, the faster it discharges. At the same time, “downtime” in work negatively affects the period of use, especially if you store the tool in a state when it sat down.

How to repair and start a lithium-ion battery

For these types of batteries, you need to remember where the positive, negative and charging contacts are located. The voltage control board located on the batteries most often fails, or rather, their stabilizers and protective diodes.

The voltage at the output of the battery is checked, if the value is significantly less than normal, resuscitation is performed.

Restoration of the 18 volt screwdriver battery

18 V is a common power, which corresponds to the presence of 15 units. As a donor, you need to choose an electrical appliance with a voltage of 14.5 V, that is, a 12 V car battery will not work.

Battery does not charge

The screwdriver, after prolonged use, sometimes fails. Its working element may stop charging, which will lead to the impossibility of fulfilling the functional capabilities of the instrument, the instrument, roughly speaking, will “die”.

In order to extend the life of the instrument, so that you do not have to remove it from the field of view, you can try three methods in turn. Each subsequent one is considered more complicated and costly. They consist in:

• restoration and increase of capacity after its reversible loss (memory effect);
• adding distilled water to the electrolyte;
• replacing some or all of the battery packs.

Restoring the battery of the screwdriver

Almost every battery in a power tool is the most expensive part. The screwdriver is no exception, because a replaceable battery can make up 30% of the total cost of the tool. After the device is discharged, it is necessary to purchase a new screwdriver, but to save finances there is another option. restoration, which will extend its service life.

Refurbishment of nickel-cadmium batteries for screwdrivers

The ni cd battery device is manufactured using the same technology, so any battery can be donated of this type.

Such devices are separate components. blocks, with a nominal voltage of 1.2 V and an energy capacity of 1200-1500 MA / h. They are found in Interskol screwdrivers. Each unit affects the power, that is, with its value of 12 V, the number of units is 10, 14.4 V. 12, etc. After changing the battery, the power may drop for the first time of operation, but then everything will be restored.

The battery on the screwdriver runs out quickly

The problem with fast self-discharge of the battery is quite common. It consists in fast charging, which takes about 20 minutes and the same short work.

This situation can be the result of incorrect operation of the thermal sensor located in the removable battery. This thermal sensor may not be installed as originally. You must return it to the place of purchase.

If the battery begins to discharge quickly after prolonged uninterrupted use, which could happen after a fall, you need to take on its repair.

How to restore a screwdriver battery at home

Can all types of batteries be reanimated? Nickel-cadmium blocks, which are found in almost all modern screwdrivers, lend themselves better to repair.

For the recovery process, you need to understand the basics of electricity. That is, to have school knowledge about the operation of batteries.

To work you will need tools and materials:

• screwdriver;
• tester;
• soldering iron;
• tin (with low corrosive flux).

A donor will be required to resuscitate the battery. In the complete set of a screwdriver, it may be available, or you need to find it yourself, for example, by removing it from another old device.

To start the operation, you need to fully charge (about 6 hours) both batteries, swing it. Then remove the plastic cover from the part to be restored using a screwdriver. This procedure must be done carefully so as not to damage the clips. Otherwise, for subsequent assembly, you will need glue, like “Moment”.

Battery life for screwdriver

A battery can last about three to four years if properly used and stored. In practice, this period is sometimes reduced to two years. It is very expensive to constantly change the tool, so it is better to choose the best option right away for certain purposes.

There are 3 different types of batteries:

• Nickel-cadmium. Most affordable, but short-lived, especially when used frequently in cold weather conditions.
• Nickel metal hydride. Small device that does not have a long service life.
• Lithium-ion. The most demanded, they are capable of not being discharged for a long time, but they have a higher cost than the above options.

Regardless of the type of battery, battery life depends on the number of charges used and storage methods. That is, the more the tool works, the faster it discharges. At the same time, “downtime” in work negatively affects the period of use, especially if you store the tool in a state when it sat down.

Battery does not charge

The screwdriver, after prolonged use, sometimes fails. Its working element may stop charging, which will lead to the impossibility of fulfilling the functional capabilities of the instrument, the instrument, roughly speaking, will “die”.

In order to extend the life of the instrument, so that you do not have to remove it from the field of view, you can try three methods in turn. Each subsequent one is considered more complicated and costly. They consist in:

• restoration and increase of capacity after its reversible loss (memory effect);
• adding distilled water to the electrolyte;
• replacing some or all of the battery packs.

How to restore a screwdriver battery at home

Can all types of batteries be reanimated? Nickel-cadmium blocks, which are found in almost all modern screwdrivers, lend themselves better to repair.

For the recovery process, you must understand the basics of electricity. That is, to have school knowledge about the operation of batteries.

To work you will need tools and materials:

• screwdriver;
• tester;
• soldering iron;
• tin (with low corrosive flux).

A donor will be required to resuscitate the battery. In the complete set of a screwdriver, it may be available, or you need to find it yourself, for example, by removing it from another old device.

To start the operation, you need to fully charge (about 6 hours) both batteries, swing it. Then remove the plastic cover from the part to be restored using a screwdriver. This procedure must be done carefully so as not to damage the clips. Otherwise, for subsequent assembly, you will need glue, like “Moment”.

Restoration of the 18 volt screwdriver battery

18 V is a common power, which corresponds to the presence of 15 units. As a donor, you need to choose an electrical appliance with a voltage of 14.5 V, that is, a 12 V car battery will not work.

Battery life for screwdriver

A battery can last about three to four years if properly used and stored. In practice, this period is sometimes reduced to two years. It is very expensive to constantly change the tool, so it is better to choose the best option right away for certain purposes.

There are 3 different types of batteries:

• Nickel-cadmium. Most affordable, but short-lived, especially when used frequently in cold weather conditions.
• Nickel metal hydride. Small device that does not have a long service life.
• Lithium-ion. The most demanded, they are capable of not being discharged for a long time, but they have a higher cost than the above options.

Regardless of the type of battery, battery life depends on the number of charges used and storage methods. That is, the more the tool works, the faster it discharges. At the same time, “downtime” in work negatively affects the period of use, especially if you store the tool in a state when it sat down.

How to repair and start a lithium-ion battery

For these types of batteries, you need to remember where the positive, negative and charging contacts are located. The voltage control board located on the batteries most often fails, or rather, their stabilizers and protective diodes.

The voltage at the output of the battery is checked, if the value is significantly less than normal, resuscitation is performed.

Restoring the battery of the screwdriver

Almost every battery in a power tool is the most expensive part. The screwdriver is no exception, because a replaceable battery can make up 30% of the total cost of the tool. After the device is discharged, it is necessary to purchase a new screwdriver, but to save finances there is another option. restoration, which will extend its service life.

The battery on the screwdriver runs out quickly

The problem with fast self-discharge of the battery is quite common. It consists in fast charging, which takes about 20 minutes and the same short work.

This situation can be the result of incorrect operation of the thermal sensor located in the removable battery. This thermal sensor may not be installed as originally. You must return it to the place of purchase.

If the battery begins to discharge quickly after prolonged uninterrupted use, which could happen after a fall, you need to take on its repair.

Restoring the battery of the screwdriver

Almost every battery in a power tool is the most expensive part. The screwdriver is no exception, because a replaceable battery can make up 30% of the total cost of the tool. After the device is discharged, it is necessary to purchase a new screwdriver, but to save finances there is another option. restoration, which will extend its service life.

How to repair and start a lithium-ion battery

For these types of batteries, you need to remember where the positive, negative and charging contacts are located. The voltage control board located on the batteries most often fails, or rather, their stabilizers and protective diodes.

The voltage at the output of the battery is checked, if the value is significantly less than normal, resuscitation is performed.

Battery does not charge

The screwdriver, after prolonged use, sometimes fails. Its working element may stop charging, which will lead to the impossibility of fulfilling the functional capabilities of the instrument, the instrument, roughly speaking, will “die”.

In order to extend the life of the instrument, so that you do not have to remove it from the field of view, you can try three methods in turn. Each subsequent one is considered more complicated and costly. They consist in:

• restoration and increase of capacity after its reversible loss (memory effect);
• adding distilled water to the electrolyte;
• replacing some or all of the battery packs.

Refurbishment of nickel-cadmium batteries for screwdrivers

The ni cd battery device is manufactured using the same technology, so any battery can be donated of this type.

Such devices are separate components. blocks, with a nominal voltage of 1.2 V and an energy capacity of 1200-1500 MA / h. They are found in Interskol screwdrivers. Each unit affects the power, that is, with its value of 12 V, the number of units is 10, 14.4 V. 12, etc. After changing the battery, the power may drop for the first time of operation, but then everything will be restored.

Restoration of the 18 volt screwdriver battery

18 V is a common power, which corresponds to the presence of 15 units. As a donor, you need to choose an electrical appliance with a voltage of 14.5 V, that is, a 12 V car battery will not work.

Battery life for screwdriver

A battery can last about three to four years if properly used and stored. In practice, this period is sometimes reduced to two years. It is very expensive to constantly change the tool, so it is better to choose the best option right away for certain purposes.

There are 3 different types of batteries:

• Nickel-cadmium. Most affordable, but short-lived, especially when used frequently in cold weather conditions.
• Nickel metal hydride. Small device that does not have a long service life.
• Lithium-ion. The most demanded, they are capable of not being discharged for a long time, but they have a higher cost than the above options.

Regardless of the type of battery, battery life depends on the number of charges used and storage methods. That is, the more the tool works, the faster it discharges. At the same time, “downtime” in work negatively affects the period of use, especially if you store the tool in a state when it sat down.

How to restore a screwdriver battery at home

Can all types of batteries be reanimated? Nickel-cadmium blocks, which are found in almost all modern screwdrivers, lend themselves better to repair.

For the recovery process, you must understand the basics of electricity. That is, to have school knowledge about the operation of batteries.

To work you will need tools and materials:

• screwdriver;
• tester;
• soldering iron;
• tin (with low corrosive flux).

A donor will be required to resuscitate the battery. In the complete set of a screwdriver, it may be available, or you need to find it yourself, for example, by removing it from another old device.

To start the operation, you need to fully charge (about 6 hours) both batteries, swing it. Then remove the plastic cover from the part to be restored using a screwdriver. This procedure must be done carefully so as not to damage the clips. Otherwise, for subsequent assembly, you will need glue, like “Moment”.

general information

The battery housing of the screwdriver contains power elements (batteries, banks). They can be made from different components, which is reflected in their name:

• nickel metal hydride;
• lithium-ion;
• nickel-cadmium.

Batteries containing nickel and cadmium are widespread and highly recoverable due to their “memory effect”. This effect is a reversible loss of capacity that occurs if the battery charging mode is disrupted. For example, the battery for a Makita screwdriver was not completely discharged, but only up to 40%, but it was set to recharge. The battery remembers the 40% mark and in the future it will work only until the discharge of this value is reached. This inconvenience can be corrected in several ways.

How to restore the battery of a 12 volt Makita screwdriver by supplying large currents

A pulse current is supplied to the problem battery using the popular Imax B6 charger, or similar. Before starting work, you must:

• check the electrolyte balance in the batteries;
• set the “nickel-cadmium” mode on the charger.

If the amount of electrolyte remaining in the banks is not large, it is impossible to start recovery, because this will ruin the battery. The missing electrolyte volume is replaced with distilled water, and only then the reconstruction begins.

To fill in the water, a hole is made with a thin drill on the side of the battery, as close as possible to the upper edge. Water is poured using a syringe with a needle until the can is completely filled. The procedure is repeated for all batteries, the filled elements are left for settling for a day.

After that, a bundle (“cassette”) of batteries is connected to Imax B6 for charging with parameters: 12 volts in short-term pulses, resistance value. 40 ohms. When the batteries are charged to 100%, they are left again for a day. A multimeter is used to check the voltage at each element, finding out if it has dropped. If an undercharged battery is found, water is added to it again, charged and the voltage is checked again.

When each can holds a charge stably, the drilled holes are sealed with silicone glue.

How to restore a battery on a Makita screwdriver

If the battery has ceased to hold a charge, and it is difficult to quickly acquire a new one in the near future, the situation can be corrected if you know how to restore the battery to the Makit screwdriver on your own.

Replacing a few worn-out cans

Of the total number of cans in a cassette, only a few can exhaust their resource. They can be removed from the solder by replacing them with serviceable ones. First, they look for damaged elements: measure the voltage of each with a multimeter, recording the results. The sum of the voltages of all batteries must be within 14 volts. Then the battery is connected to a screwdriver, they work intensively for some time, and measurements are taken again. If the difference between the first and second digits for an individual can is 0.5-0.7 volts, it must be replaced.

Restoration of cans

Batteries that have not passed the test should not be thrown away in a hurry. The main reason for their failure is the evaporation of water through the sealing gum located between the body and the middle tire. When there is a complete “zero” on it, the battery is briefly charged by impulse supply of 12 V voltage through a resistance of 40-50 Ohm. In this case, it should be monitored so that the case does not overheat. If after that there is still no voltage on it, the can can be thrown away.

To restore the electrolyte, some craftsmen drill mini-holes for the syringe needle in the side recess of all the batteries in the battery. Then the jars are filled with distilled water. After that, the batteries should lie down for a day. The battery is then “trained”, charged and the voltage at each cell is checked. The holes are sealed with silicone.

How to restore a screwdriver battery and its capacity? Is it possible to restore the battery of a screwdriver

The screwdriver is a necessary tool in the household, but the time comes and its source of energy. the battery stops working. Models are constantly changing and sometimes it is not possible to find the right battery. At the same time, it can be completely restored or its service life can be extended by 2-3 years. How to repair a screwdriver battery is described in this article.

Battery recovery in Aeg screwdriver

2 Li-Ion batteries are sold with the screwdriver. If one of them does not charge, this does not mean its malfunction. It is possible that it is too much discharged. To do this, you can try to “train” the battery by applying a pulse voltage to it, and then put it on charge. The easiest way is to connect to a charged battery for a few seconds.

After it was not possible to restore the battery of the Aeg screwdriver using the above method, its case should be disassembled and each jar should be checked.

How to restore a screwdriver battery

The batteries inside all look alike. They consist of cans welded together in series. The result is the total battery voltage at the output terminals. Elements are used of the following types:

• Ni-Cd (Nickel-Cadmium, U = 1.2V).
• Ni-MH (Nickel-Metal Hydrite, U = 1.2V).
• Li-Ion (lithium-ion, U = 3.6V).

Battery recovery of the Hitachi screwdriver

How to restore the battery of a Hitachi screwdriver? Both Ni-Cd batteries need to be charged, after which they should be disassembled and the voltage measured at each cell with a load of 1.5 ohms. Elements showing lower voltage can be discarded, and one high-quality battery can be assembled from the whole. Just 1 or 2 cans can spoil the battery experience. How to restore the battery of the Hitachi screwdriver, as well as all other models, depends, first of all, on the type of elements installed in them.

Interskol screwdriver battery

The Interskol screwdriver is one of the most popular due to its versatility. In addition to the main function, it can also serve as a drill.

Lithium-ion batteries do not have this disadvantage, but they have a much higher price. During operation, when every minute counts, a little recharging is often required to maintain the required power of the screwdriver. Here, such batteries are irreplaceable, since their capacity can be quickly restored.

The buyer chooses the battery of the Interskol screwdriver on his own, depending on his preferences, capabilities and the required work. Nickel-cadmium batteries are used in most cases.

How to restore the Interskol screwdriver battery if it has not been used for a long time? During operation, one must try to ensure that there is no voltage drop to zero. For a 1.2 V can, the discharge is produced up to 0.9 V. If it is completely discharged during long-term storage, the charger may not “see” it. It is necessary to “push” the battery with another, more powerful source of current, so that a small voltage appears on it. After that, you can connect it to a standard charger.

How to restore the battery of a Bosch screwdriver

Bosch screwdrivers are perfect for non-professional use. They are equipped with rechargeable batteries with Ni-Cd cells. They can withstand high load currents, but quickly self-discharge (in 3-4 weeks). They must be restored at least once a month so as not to fail. In addition, during operation, the elements are unbalanced and capacity is lost over time.

One of the recovery methods is to disassemble the case and “drill” each element separately. If this does not help much, some of them will have to be replaced. Then the battery will last a long time.

Replacing batteries

The most effective way to repair a screwdriver battery is to replace a defective can. To do this, you can use a new battery, which can be easily found on sale today, or remove a serviceable bank from an inoperative battery pack. Replacement work must be performed in the following sequence:

Remove the faulty battery from the battery circuit. Considering that they are all connected by plates set for spot welding, it is best to use side cutters for this purpose. In this case, you need to leave a sufficient length of the shank on a serviceable bank in order to be able to solder it to a new battery.

On serviceable banks, you need to leave shanks so that they can be soldered, on a faulty bank it is not necessary to do this

Solder a new battery in place of the removed defective jar, observing the required polarity. The positive terminal is soldered to the negative terminal of the “neighbor”, and the negative terminal, respectively, to the positive terminal. To do this, you need a soldering iron with a power of at least 40 W and soldering acid. If it was not possible to maintain a sufficient length of the plate, you can connect the cans with a copper conductor.

For soldering, a soldering iron with a power of at least 40 W and soldering acid are used

Collect the batteries in the case according to the same scheme according to which they were laid before the repair.

After installing a working can, the entire chain must be put back in the battery box

Equalize the charge on each bank by repeating the charge-discharge cycle several times. Then check the voltage potentials on each bank with a multimeter. They should be at the same level. 1.3 V.

It is important not to overheat the jar when performing soldering work. Therefore, it is impossible to hold the tip of the soldering iron on the battery for too long.

Repair of battery packs with lithium-ion-type cans is carried out in the same way. The only thing that complicates the repair task is disconnecting the batteries from the control board. In this case, only one repair method is applicable. replacing a defective can.

Typical malfunctions of the screwdriver battery

Despite the fact that screwdrivers are equipped with different types of batteries, they all have the same design and similar malfunctions. The following breakdowns of this device are most common:

• loss of capacity by one or more batteries;
• mechanical damage to the battery pack circuit (tearing of the plates connecting the cans to each other or to the terminals);
• drying out of the electrolyte;
• decomposition of lithium in Li-Ion cells.

Loss of battery capacity is the most common defect in screwdriver batteries. Its essence lies in the fact that the loss of the charge capacity of at least one battery does not make it possible to fully charge the rest of the banks. Receiving a low-quality charge, the battery is quickly discharged.

Such a malfunction may be a consequence of the memory effect or drying out of the electrolyte in the cans due to their heating during charging or under load. This defect in batteries of any type can be rectified by yourself without contacting a service center. In this case, you can try to repair faulty elements or replace them. It will not be possible to restore only lithium-ion battery cells that have lost their capacity as a result of lithium decomposition. Such banks can only be replaced with new ones, removed from an inoperative battery pack.

How to repair and start a lithium-ion battery

For these types of batteries, you need to remember where the positive, negative and charging contacts are located. The voltage control board located on the batteries most often fails, or rather, their stabilizers and protective diodes.

The voltage at the output of the battery is checked, if the value is significantly less than normal, resuscitation is performed.

Partial replacement of worn-out cells

It will be more economical to replace each cell separately if you have free time. Here you need the skill of spot welding. soldering the cells with an ordinary soldering iron can change their characteristics and spoil!

Having found the faulty batteries, it is necessary to decide on the method of their repair. Two options are possible here. The first is to reanimate defective batteries by flashing them with a current with a higher voltage or add to cans of distilled water if the electrolyte dries out. But these measures are temporary; in the future, the malfunction may appear again. Another method of repair is more effective, which consists in replacing defective batteries with new or used ones, but known to be in good working order.

How to restore a screwdriver battery at home

Can all types of batteries be reanimated? Nickel-cadmium blocks, which are found in almost all modern screwdrivers, lend themselves better to repair.

For the recovery process, you must understand the basics of electricity. That is, to have school knowledge about the operation of batteries.

To work you will need tools and materials:

• screwdriver;
• tester;
• soldering iron;
• tin (with low corrosive flux).

A donor will be required to resuscitate the battery. In the complete set of a screwdriver, it may be available, or you need to find it yourself, for example, by removing it from another old device.

DIY: Repair Faulty NiMH Battery Instead Of Buying New One

To start the operation, you need to fully charge (about 6 hours) both batteries, swing it. Then remove the plastic cover from the part to be restored using a screwdriver. This procedure must be done carefully so as not to damage the clips. Otherwise, for subsequent assembly, you will need glue, like “Moment”.

General repair recommendations

To repair the battery, you will need measuring instruments. a 2 A ammeter, a 2 and 15 V voltmeter, a tester, an ohmmeter and a milliammeter. The body is manipulated with a screwdriver, scissors and pliers. A magnifying glass may be needed to detect defects.

While solving the problem, is it possible to repair the battery, a search for the faulty element is performed and its further replacement. For verification, a standard scheme is used, and on the basis of the data obtained, the state of individual parts is analyzed. It should be remembered that not only mini-batteries may be faulty, but also the terminals of the screwdriver itself. Determining the causes begins with measuring the voltage with a tester on each individual battery. All non-working elements are marked and separated from non-working ones. If the battery is rapidly discharging, do not immediately disassemble it. First, you can try to restore the battery capacity of the screwdriver. For this purpose, the battery is fully charged and deeply discharged over several cycles. In most cases, the capacity is almost completely recovered.

Often the screwdriver stops working due to the failure of the terminals. During operation, they gradually unbend, as a result, the contact is broken and the battery is not fully charged. To repair the charger, you must first disassemble it, and then carefully bend each terminal. After that, you need to check the quality of charging using measuring instruments.

If the measures taken did not help, you just need to replace the faulty part. If a specific cause of a malfunction is found, it is recommended to use the recovery methods below.

Structural elements of the screwdriver

The screwdriver is rightfully considered an indispensable universal tool. The modern screwdriver market is represented by a large number of models equipped with batteries. Despite the variety of brands and modifications, all batteries have the same structure and only slightly differ from each other.

Each of them includes separate elements connected in series with each other. They are all manufactured to standard sizes and have the same voltage level. Certain types of elements differ only in capacity, measured in A / h and indicated in the marking. There are 4 contacts in the tool body that perform various functions. Including, two are power, designed for charging and discharging. In addition, in the upper part there is a control contact included in the circuit together with a special temperature sensor. It protects the battery, disconnects the charging current and limits it to the set value by changing the temperature.

A fourth contact is separately located, connected together with a resistance. It is necessary when using charging stations of increased complexity, capable of equalizing the charges of all battery cells. Such stations are rarely used in everyday life due to their high cost. A conventional 12-volt screwdriver does not require such stations. One of the reasons for the failure of a screwdriver is a malfunction of the battery, that is, its separate element. In such cases, the daisy chain breaks down the entire circuit. Therefore, it is very important to pinpoint the faulty location. As a rule, this happens after the expiration of the established service life. This problem can be solved in two ways: purchasing a new battery or repairing and restoring an old battery.

How to restore a screwdriver battery

The battery life is relatively short, on average 5 years. After a set period, the battery abruptly stops working. In such a situation, it is not always possible to quickly acquire a new power source, so the home craftsman has to solve the problem of how to restore the screwdriver’s battery, at least for a short time. In some cases, after a successful recovery, the batteries work normally for quite a long time.

• Structural elements of the screwdriver
• What batteries are used in screwdrivers
• General repair recommendations
• How to eliminate memory effect
• How to properly top up distilled water
• Replacing old batteries
• Battery gas release

What batteries are used in screwdrivers

Correct diagnostics requires knowledge of the main types of batteries used in screwdrivers and the design features of each of them. Each battery consists of mini-batteries connected in series in a single chain. Depending on the material of manufacture, they are nickel-cadmium (Ni-Cd), nickel-metal hydride (Ni-MH) and lithium.

The first option, Ni-Cd, is the most widely used. In these batteries, each cell has a voltage of 1.2 volts, for a total of 12 volts with a capacity of 12,000 mAh. They differ from lithium in the possibility of recovery, since they have a well-known memory effect, which is a reversible loss of capacity. Due to the design features of batteries, not all methods are suitable for their recovery. For example, lithium cells cannot be recovered using Imax B6 charging, since lithium gradually decomposes, loses its quality and does not hold 18 volts. The same method is not always suitable for Ni-Cd batteries, since in some cases the electrolyte can completely boil off in them. However, there are many options for recovery.

Different types of batteries also differ in their own operating voltage. This difference is due to the materials used to make a particular battery. This factor also affects the capacity, which ensures long-term operation of the tool without additional charging. Therefore, at the initial opening of the case, first of all, the type of elements placed inside is determined. The fact is that it is not allowed to replace lithium mini-batteries with nickel-cadmium ones, since their operating voltages differ significantly. Accordingly, the methods of repair and restoration will differ.

How to properly top up distilled water

Distilled water only evaporates from nickel-cadmium batteries when they overheat during operation. Therefore, to eliminate the problem and restore their functions, water must be refilled. This procedure is performed in the following sequence:

• After disassembling the battery, mini-batteries will be found inside. Their number may be different, depending on the brand of the instrument. The defective element is determined by a multimeter. In a working battery, the voltage is 1-1.3 V. If this indicator is lower, then the element is defective and needs to be repaired.
• Next, the faulty parts are carefully removed without destroying the connecting plates. You will need them later for reassembly.
• A hole of no more than 1 mm is drilled in the side part. It is not located in the middle, but closer to the bottom or top of the battery. You only need to drill the wall, without going deep inside the element.
• Distilled water must be drawn into the syringe. The needle is inserted into the hole and through it the battery is completely filled with water. After that, she must stand in this position for at least a day.
• After a day, the battery is charged with a special device, and then left in a charged state for another 7 days.
• After a week, the capacity and voltage are checked again, and if it has not dropped, then the hole in the case is sealed or sealed with silicone.

After all the manipulations, the batteries are assembled into one piece and inserted into the battery case. The connecting plates are soldered or spot welded. Then the performance of the entire battery is checked again, after which it is completely discharged using small loads. The charging and discharging process is performed at least 3 times.

Replacing old batteries

In this way, you can repair the battery of any screwdriver. The repair procedure itself is not particularly difficult and begins with disassembling the battery. Using a multimeter, faulty elements are determined, whose voltage will be below normal. Then they are carefully removed and the exact same mini-batteries are purchased instead.

New parts are installed in their places and connected with existing plates. Soldering or spot welding is used for the connection. In this case, you need to ensure that the battery does not overheat. Therefore, the work must be done carefully and quickly using flux or rosin.

How to eliminate memory effect

When a battery is very often undercharged and then discharged, it has a so-called memory effect. That is, the battery gradually, as it were, memorizes the minimum boundary of charging and discharging, as a result, its capacity is not fully used and gradually decreases more and more.

This problem is typical mainly for nickel-cadmium batteries and to a lesser extent affects nickel-metal hydride batteries. In any case, the battery capacity needs to be restored. The memory effect does not affect lithium-ion batteries at all. In order to solve the problem of whether the element can be repaired, it is recommended to completely discharge and charge the battery using a 12 volt light bulb. The positive and negative wires are soldered to it, which are connected to the battery contacts. This procedure is repeated five times or more.

Battery gas release

This repair method applies to lithium-ion battery cells. During the period of operation, they overheat, as a result of which electrolyte evaporates from some batteries. This causes gases to build up inside the battery, causing swelling and bending of the plate. After that, you have to restore the screwdriver battery. The solution to this problem is carried out in the following order:

• Dismantling the battery and finding a faulty battery with a multimeter. Usually, there is no voltage at all in such elements.
• The battery is then pulled out and gas is released from it. In the first case, you will need some kind of flat tool curved at the end. It is brought under the positive contact and the swollen plate is gently pressed down. The gas finds its way on its own, making a hole and going out. In this case, you restore your working capacity only for a short time, because the electrolyte will evaporate completely through the hole and the battery will stop working again.
• In the second case, the positive contact is disconnected using pliers, after which it is slightly bent, but not completely cut off. After that, an awl is inserted under the curved plate and gradually pushed inward. That is, the plate is disconnected from the edge of the battery and the gas flows out. After that, it is inserted into its place, and the hole is closed in the most convenient way. It remains only to solder the contact disconnected at the very beginning.

Adding boiled away electrolyte

The following procedure algorithm will help to cope with this problem, which requires accuracy.

• Unusable jars, which you have identified with a lamp or multimeter, must be removed by cutting off the connecting plates;
• Taking a punch (d = 1 mm), make a hole in the body from the side of the “-” sign;
• Pump out air in a volume that matches the volume of distilled water (0.5-1 cubic cm), which must be poured through the hole;
• Cover the hole with epoxy and return the element back to the circuit.

After the procedure, before use, it is worth recharging (it will be enough five times) your electric tool.

How to deal with memory effect

First, determine if your battery has this effect. It manifests itself in the fact that when the battery is fully charged, it discharges extremely quickly, and the device can work again only over time.

To extend the use of the screwdriver without repair for more than a year, the following procedure should be done about five times before the actual start of operation. fully charge the battery and then slowly discharge (you can take a typical 220 V lamp) to 5 V (which is 30% of the nominal capacity).

Thus, you will be able to eliminate this problem. It is worth noting that only owners of nickel batteries can encounter it.

Consider the cases of the possibility of recovering elements

If you have a nickel-cadmium battery, then the option with a flashing current higher than the base current is likely.

If you have a lithium-ion battery on hand, then only the replacement of faulty parts will help to establish the work, since such batteries do not suffer from the memory effect and you will not solve this problem so easily.

We are looking for the weak point of your battery

To determine which part is out of order and can no longer function in the same mode, you will need a multimeter. It is needed to measure voltage. Since this parameter is slightly different for different types of batteries, first find out which one you have. So,

nickel cadmium and nickel metal hydride batteries have a voltage of 1.2 V, while lithium ion batteries are already 3.6 V.

Next, do the following in the sequence below.

• First. fully charge your screwdriver battery;
• Second. measure the voltage of all cans in turn;
• Third. note which of them the voltage is below the norm (in accordance with the fact that the error is allowed only 0.2 V);
• Fourth, put the battery back in place, turn on and work with the device to discharge it until the power decreases;
• In the last step, you disassemble the instrument again and measure the voltage with a multimeter. If the deviation is 0.7-0.5. then you can safely consider this a malfunction.

Another way to measure

It practically repeats the previous one, only in order to discharge the instrument, you will use a 40 W lamp. The advantage of this method is that you do not have to assemble and disassemble the battery several times.

If everything is in order inside, then the problem may lie in the charger, which should already be dealt with.

Also, several methods are proposed for restoring entire blocks:

• Add the boiled down electrolyte;
• Eliminate the so-called memory effect.

How to restore a screwdriver battery

We will tell you about the possibility of restoring the battery of your screwdriver, and how to do it correctly, so as not to harm the device as a whole.

No matter how complex, packed with various functions, your screwdriver is, most often the batteries for all such devices are the same. Therefore, on the Internet, you can find a lot of tips on how to repair the battery.

How to Repair Electric Screwdriver

You can often find in the operating instructions for screwdrivers that the battery cannot be disassembled and there is no need to do this. But often, the price of this most important device makes up most of the entire tool, then it is not at all profitable for an ordinary consumer to constantly buy a new battery.

About the features in the repair of nickel-cadmium batteries

Strong overheating is unlikely to have a positive effect on the state of the elements, it is worth watching this. After reflashing the old elements, study the rules for distilling a new battery. This action should be carried out once every six months. This can provide maximum battery capacity. Recharging must be carried out with preliminary discharging.

How to restore a battery on a screwdriver

A real way to restore 100% battery of a screwdriver, according to my method NI-CAD 1.2V

To begin with, there are a lot of videos on the Internet on recovering batteries from screwdrivers, and they are all the same as a mirror, a brief description of the recovery process that these people offer is that we take the battery, push it with a power supply or another battery, then charge and we use it, and it’s strange that someone doesn’t look, but what kind of stress will be on him when he lies down for a week or two. I offer a completely different way to restore

Which does not just charge and use until the battery dies again. And the one that you did and use as a new battery until the need arises. This method was filmed in draft about a month ago, but I never dared to put it on the site, I just didn’t want to reshoot it for a more correct explanation. And frankly speaking, I have very little free time lately.

But now the time has passed which has shown that the recovery option that many people on the network offer to use are not destined to live for more than a certain period of time. And my version, even after 2-1 months of inactivity, as if nothing had happened quietly works and charges, I still tried to shoot a new video clip, where in the brink I will try to tell everything.

In fact, everything turned out to be very simple, and in this I was helped by the NI-CAD 1.2V battery I disassembled, which showed me that even with all the zeros on the outside of the device, the patient inside is rather alive than dead and feels very good.

An attempt to regenerate the bus relative to the collector plate was done using distilled water, and the process was quite successful, as a result of which I came up with the easiest way to restore them even without disassembling the batteries!

It is enough to drill a hole in the accumulator in the place behind the rollers. and pour 20.40 ml of distilled water there. after a couple of cycles, cover the hole with lightly silicone.

Before repeating, I recommend watching the video, where I tried to describe the process in more detail.

If you are not sure or afraid of ruining a damaged battery, for example, you can do this with one battery.

If your batteries have voltage and are in the operating range, then you may have a problem with the following:

Also, if you notice that the drill began to work somehow sluggishly and at the same time works as long in time after charging, then you rather have a problem in one or more batteries that are at zero!

A very interesting effect on the battery capacity, it was equal to or slightly more than the indicated battery capacity after restoration by this method.

Fourth way

In terms of simplicity, this method can be compared with the first. Unfortunately, it does not work on all types of devices, but it does exist, since it does not require you to have additional equipment or skills. This method of how to revive your phone battery at home looks like this:

• Remove battery from smartphone.
• Connect the charger to the device.
• Reinsert the battery.
• Leave the phone on charge for 10-12 hours.

Why might this work? As mentioned earlier, the battery needs to be “pushed”. Such a sharp flow of current can become such a jolt, and the battery will return to normal, starting to accumulate energy.

A simple battery to help

This method also does not always help, but nevertheless it is very popular. To implement it, you need to take a fully charged battery or a powerful battery and connect it by means of conductors, observing the polarity. After ten minutes, you must try to insert the recovered battery into the phone and connect the charger.

This method is based on the method used by motorists, giving a “light” battery from another car. And, as in cars, you must not allow anything to heat up.!

Causes

Each battery contains a power controller. It is thanks to him that we can see the percentage of the battery charge on the screen. The same element determines the device’s need for recharging. When the phone is discharged, the controller, after urgent requests to replenish energy reserves, switches to the battery protection mode from complete exhaustion.

It is worth noting that the battery is charged via a charger that has a current limiter. This information contains a way to revive the phone battery. to start up the current directly. In order for this not to pose a danger to life, there are several simple ways, which are discussed below.

What’s better?

Before reviving a phone battery that is completely discharged, it is worth deciding which of the methods is the most effective. All these recovery methods are good in their own way, but some do not have confirmation of their safety, others require special skill and tools.

Basically, the first and fourth method are not only ways to revive your phone battery, but also a real guide for an emergency. Such methods will not harm or aggravate the situation of the smartphone.

There is a lot of controversy about freezing, as low temperatures are what can cause the battery to swell. Some say that this is a way to give a “dying” battery “pain reliever” so that its death then comes quickly and painlessly.

Even Ni-MH batteries are recovered in the second and third ways. But if you do not have access to the necessary equipment and are simply far from electronics, it is better not to risk it and turn to the masters of this business.

How to revive a completely discharged phone battery? Recovery methods

For a modern phone, the main and decisive criterion is its autonomy, that is, how long the battery can work without recharging. The scariest event for many is when the phone is so discharged that it does not respond to the charger. Why is this happening? How to revive your phone battery?

Third way

A less time-consuming method than reviving your phone’s battery is to use a power adapter with a controller designed to restore and charge all types of batteries. Such blocks are used when rebuilding Ni-MH batteries. This is a Turnigy Accucell 6 type of device. How do I use it? The same as with cables in the second method.

It is important with this method not to attempt to charge the battery fully through this device. Why? Over time, the battery will wear out and its volume will shrink significantly. In order not to ruin the battery, charge it through a universal charger up to 3.5 volts, and then through the phone or tablet itself. with a device whose battery we have reanimated.

Is it only to revive?

Another, no less strange way is freezing. Some who have already carried out similar experiments with the battery of their device, claim that they were able not only to “resurrect” it, but also to increase the battery life. The principle of operation of this method in deceiving the controller, which was mentioned above, because at a reduced temperature, chemical reactions in the battery slow down significantly.

Before restoring the battery to the phone, make sure it is not a lithium-ion battery. This type of battery may not withstand such experiments.

The process of resuscitation itself is as follows. To begin with, the battery discharged below the level is sent to the freezer for a period of no more than half an hour. After that, they charge it for a minute. In this case, it is strictly forbidden to turn on the phone. Next, you need to remove the battery from the device and let it warm up to room temperature on its own. At the same time, you cannot heat and rub the battery.

As soon as the battery reaches room temperature, it must be placed in the device and charged in the usual way. Such a charge lasts more than a day, in some cases even two.

Elementary way

As unexpected as it sounds, leave your device charging for a day. For some devices, the push will be one of the pulses received from the charger. Roughly speaking, at some point, the battery will “grab” the current and begin to accumulate charge. Don’t be angry if your phone reacts to the charger with a dark screen. In this case, there is no rush. The rest of the methods should be tried only after this method.

Elimination of the “memory effect

If, after a full charge, the screwdriver quickly consumes battery power and after a while continues to work a little, then you are faced with the “memory effect” of Ni-Cd or Ni-MH.

To eliminate the “memory effect” in a screwdriver will help its calibration (training): charge up to 100% (as low as possible); completely discharge the tool with a low power rotation feed for a long time; repeat this procedure 3-5 times, and the battery will come back to life.

Determine the malfunction of the screwdriver battery

• Charge the battery to full level, remove from charge and disassemble to access the cells.
• Using a multimeter, we measure the voltage (in DCV mode) of each cell (battery).
• In good condition, Ni-Cd and Ni-MH give out 1.2-1.4V, and Li-Ion. 3.6-3.8V.
• Collect the battery and discharge it to an obvious slowdown in the rotation of the screwdriver.
• Disassemble and measure again. a voltage drop to the level of 0.4-0.8V indicates the wear of such a cell.

What you need to know before you start rebuilding a screwdriver battery?

• Most batteries in a power tool have the same design features (series connection of compact cells).
• It is necessary to pay attention to the type of battery (Ni-Cd, Ni-MH and Li-Ion) and capacity (in mAh).
• When disassembling the battery pack, the polarity (/.) of the connections must be monitored.
• The “banks” are protected from overheating by a thermal fuse.
• It is very difficult to restore a Li-Ion battery at home. you will need appropriate experience and skills (how to determine serviceability, see below).

The service of restoring the battery of the screwdriver is professionally provided by Neovolt (ask for help here).

How to restore a screwdriver battery?

Complete replacement of the battery with a new one

Partial replacement of worn-out cells

It will be more economical to replace each cell separately if there is free time. Here you will need the skill of spot welding. Attention! Soldering the cells with an ordinary soldering iron can change their characteristics and spoil it. this is dangerous, since heating can lead to an explosion of the battery.

Is it possible to restore the battery of a screwdriver?

NEOVOLT.RU | Reliable batteries

May 14, 2019 3 min read

Rebuild the screwdriver battery yourself. Save up to 30% on the total cost of your tool by reading this guide.

You can restore the battery with any models of screwdrivers (18 volts, Makita 12 volts, Makita 14.4, Metabo, Hitachi, iMax B6 and so on) with Ni-Cd (NiCd), Ni-MH and Li-Ion batteries. You should carefully consider the recommendations and clarifications regarding the different designs of the power tool.

Exotic method (not recommended)

The method is offered on various construction forums, but keep in mind that it borders on absurdity and is very dangerous.!

Screwdriver batteries wear out due to a change in the state of the electrolyte substance with active use of the power tool. By cutting the connection plates and punching a hole in the cell, the chemical composition can be added. After that, the battery case will need to be sealed. We do not recommend doing this operation under any circumstances.

If you know of other recovery methods or have experienced them, then tell us about it in the comments or send a message to us on @NeovoltRu.

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