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Modern devices like smartphones, mobile phones, laptops, tablets, etc. operate from an autonomous power source, which often acts as a li-ion battery.
The widespread use of this particular type of battery is explained by the simplicity and cheapness of its production, as well as excellent operational characteristics and a large reserve of discharge-charging cycles. And to extend the life of the device and the battery, you need to know how to charge the li-ion battery correctly and what mistakes you should not make.
Rules for charging Li-ion batteries
For the convenience of users, most batteries are equipped with a special controller that will not allow the charge to go beyond critical points. So, when the lower limit of discharge is reached, the circuit simply ceases to supply voltage to the device, and when the maximum allowable charge level is exceeded, the incoming current is turned off.
So, how to properly charge li-ion batteries: you need to put the device on charge when the charge indicator reaches at least 10-20%, and after reaching 100% charge you need to leave the battery on charge for another 1.5-2 hours, since In fact, the charge level at this moment will be 70-80%.
About once every 3 months, preventative discharge of the battery is necessary. To do this, “put” the battery, and then recharge the fully discharged li-ion battery for 8-12 hours. This will help reset the battery threshold flags. However, frequent discharge to zero for li-ion batteries is harmful.
How to charge li-ion batteries?
Often, users have a question about how to charge the li-ion battery of a smartphone or other device. To charge batteries of this type, the constant voltage / constant current method is used. The rated voltage on the cell in it is 3.6 V, and it does not support slow recharging after the end of a full charge.
The recommended charge current for such batteries is 0.7 C on average, and the discharge current is 0.1 C. If the battery voltage is lower than 2.9 V, the recommended charge current is 0.1 C. A deep discharge can lead to bad consequences, including damage to the battery.
You can charge li-ion batteries when you reach any discharge level, without waiting for critical values. During recharging, as the voltage approaches maximum, the charge current decreases. At the end of the charge, the charge current completely stops.
A modern person cannot imagine his life without a mobile phone, tablet, laptop, portable drill, screwdriver, flashlight and other devices that can operate both from the mains and from the battery. Often, such devices use lithium-ion power sources.
Many will ask why this type of energy storage is most often used in electrical appliances. The answer is quite simple and obvious. lithium-ion batteries are small in size, and they also have a fairly long life. from 300 to 2000 charge-discharge cycles. It is precisely because there are so many power sources of this type around us that everyone should know how to charge a lithium-ion battery.
What is a Li-ion battery?
Despite the fact that everyone has come across such a power source, not everyone understands what kind of battery it is and how it is arranged. The simplest and most common option is a lithium-ion power supply for mobile phones. It has this design: on top is a controller for charge-discharge control, and below it is a battery cell (bank).
In 99% of the batteries for cell phones, only one battery cell is used; specialists in their jargon often call it a bank. The rated voltage of this power supply is 3.7 volts.
The device also has a special controller (a regular board with a microcircuit), thanks to which the battery does not recharge. Therefore, the manufacturer, for his part, did everything possible to prevent emergency situations that would lead to a quick breakdown of the power source.
How to charge for the first time
Many probably remember how everyone said that the new battery must be brought to full discharge, and then fully charged, and so done three times. There really is such a first charge process, it is actually necessary, but for Ni-Cd and Ni-MH batteries. Such batteries were put in quite ancient phones, which are now practically not available.
Not everyone knows how to charge a lithium-ion battery for the first time, and begins to carry out a full discharge procedure. Batteries of this type are arranged in a completely different way, and the deep discharge process is very harmful to them. That is why such devices are sold with a charge of 2/3 of the capacity, and not so that a person can check the phone or other device.
Unfortunately, quite often, consumers, before charging a lithium-ion battery for the first time, remembering the old days, begin to completely discharge it, thereby almost immediately taking away half their life. Therefore, be careful not to make common mistakes that lead to battery damage.
How to charge a lithium-ion battery?
The most optimal working environment for a conventional Li-ion power source is a charge level of 20-80%. These devices really do not like recharging, and although there is a special controller on the battery that will not allow this, there are some consumers who keep the battery charging for days. This is completely useless, and thus does not extend the operation of the device, but rather.
18650 Li-ion Battery
How to charge a 18650 Li-ion battery
What is the danger of overcharging and deep discharge?
Due to the fact that people do not know how to charge a lithium-ion battery, they often make mistakes and can keep it charging for too long or, conversely, forget about it for a long time. What is the danger of improper battery operation? The thing is that in this case, lithium ions move from one electrode to another. The manufacturing material of the electrodes themselves may be different, but in this topic these details are not so important.
Simply put, the more the battery is charged, the more lithium ions are in the electrode. If their value is constantly at the maximum, then in this case a fairly rapid wear of the device occurs.
How to charge batteries
Li-ion batteries have gained great popularity also because there are a fairly large number of options than you can charge them.
The most logical and correct way to charge a lithium-ion battery is with a standard charger. Thanks to a special device, the battery will receive maximum charge in the shortest possible time. over, it is completely safe for the battery.
For those who do not know how to charge a lithium-ion battery, if there is no regular charger at hand, we inform you that this can be done using a computer and a USB cable. However, in this case, the current will reach only 0.5 amperes.
If none of the previous charging methods came up, you can use the old, but still relevant and to this day device, which is popularly called the "frog". Such devices are more designed for batteries from cell phones. The design of the "frog" is quite simple: there is one dock where you can install a lithium-ion battery, as well as contacts, adjustable in width. Thus, this charge is suitable for almost any battery of this type.
As you can see, there are a lot of ways to charge a battery. But before you charge a lithium-ion battery, you should make sure that there really is no way to use regular charging. Other methods are used if necessary. They do not harm the battery, but still the original charge should be a priority over the rest.
If a person does not know how to charge a lithium-ion battery of a screwdriver, then we inform that you need to do this only with specialized charging that comes with the device. It is worth noting that if charging fails, but there is no way to purchase a new one, for example, this model is no longer produced, then in this case you can connect several 18650 batteries to each other and insert them into the box with the original charge. It is impossible to say how much a 18650 battery is needed, it all depends on the voltage of the screwdriver.
About once every three months it is necessary to calibrate. To do this, allow the battery to completely discharge. In this case, the battery controller will be able to independently calibrate the boundaries of the full charge and discharge of the device. This is necessary so that on the device in which the Li-ion battery is installed, current information about its charge is displayed. If there has not been a complete discharge for a long time, false information about the percentage of battery charge may be displayed.
After the battery is completely discharged, it must be fully charged to 100% when the device is turned off. You can see the battery charging time in the instructions. If at the end of this time you turned on the device, and the charge shows less than 100%, then you need to turn it off again and continue charging until there is a full charge level.
If the use of batteries is not planned over a long period of time, then special attention should be paid to how it should be stored. The optimal charge is considered to be 30-60% of capacity. The battery should be in a fairly cool room, where the air temperature remains about 15 degrees. If the battery is stored in a fully charged state, then the next time you turn it on, you will find that its capacity has decreased significantly.
When the device is left completely discharged, it is even worse. With a high degree of probability in six months it will need to be taken for disposal. Lithium-ion batteries must not be stored for a long time in deep discharge.
Another worst enemy of Li-ion batteries is the high temperature, which they categorically do not tolerate. The owner of this type of battery should not be exposed to sunlight, nor should it be placed near a battery or other sources of heat radiation. The maximum permissible temperature for using the battery is 50 degrees. If you neglect the temperature regime, it is likely that after a few months the new battery will become damaged.
Now you know whether it is possible to charge lithium-ion batteries and how to do it correctly. Summing up all of the above, we can highlight the following points:
- If possible, the battery should always be charged with original charges.
- It is most correct to charge the batteries up to 80%, while not lowering the discharge value below 20%.
- Do not keep the battery constantly on the charger, and full discharge is also not recommended.
Subject to a few simple rules, a Li-ion battery can last a fairly long period of time, while the energy consumption will remain at a high level.
The processes of charging the discharge of any rechargeable batteries proceed in the form of a chemical reaction. However, the charge of lithium-ion batteries is an exception to the rule. Scientific studies show the energetics of batteries such as the chaotic movement of ions. The allegations of pundits deserve attention. If in science it is correct to charge lithium-ion batteries, then these devices should last forever.
Features of lithium-ion batteries
Scientists see the facts of the loss of useful battery capacity in scientists as ions blocked by so-called traps.
Therefore, as in the case with other similar systems, lithium-ion devices are not immune from defects in the process of their application in practice.
Internal corrosion and other degenerative moments, known as parasitic reactions of electrolyte and electrodes, do not bypass this type of energy devices.
Chargers for Li-ion structures bear some resemblance to devices designed for lead acid systems.
But the main differences between such chargers are seen in the supply of high voltages to the cells. In addition, more stringent current tolerances are noted, plus the exclusion of charge in an intermittent or floating manner when the battery is fully charged.
A relatively powerful power device that can be used as an energy storage device for the construction of alternative energy sources
If lead-acid batteries are somewhat flexible in terms of voltage connections / disconnections, manufacturers of lithium-ion systems categorically reject this approach.
Li-ion batteries and the operating rules of these devices do not allow the possibility of unlimited overcharging.
Therefore, there is no so-called “miraculous” charger for lithium-ion batteries that can extend the life of the battery for a long time.
It is impossible to get additional Li-ion capacity due to a pulsed charge or other known tricks. Lithium-ion energy is a kind of “clean” system that takes a strictly limited amount of energy.
Charging cobalt-blended batteries
The classic designs of lithium-ion batteries are equipped with cathodes, the structure of which is made up of materials:
All of them are usually charged up to 4.20 V / I. Tolerance is not more than /- 50 mV / i. But there are also certain types of nickel-based lithium-ion batteries that allow a charge of up to 4.10V / i.
Cobalt-blended lithium-ion batteries are equipped with internal protective circuits, but this point rarely saves the battery from exploding in overcharge mode
There is also a development of lithium-ion batteries, where the percentage of lithium is increased. For them, the charge voltage can reach a value of 4.30 V / I and above.
Well, an increase in voltage increases the capacitance, but voltage output beyond the specification is fraught with destruction of the battery structure.
Therefore, for the most part, lithium-ion batteries are equipped with protective circuits, the purpose of which is to maintain the established norm.
Full or partial charge
The recommended rate of charge of the energy cell of cobalt-blended batteries varies from 0.5C to 1C. 2-3 hours are enough for a full charge.
Manufacturers of such batteries recommend charging them at a rate of 0.8C or even less, explaining this with positive conditions to extend the life of the lithium-ion battery.
Video: How to Charge a Li Screwdriver Battery
However, practice shows: most powerful lithium-ion batteries can take a higher voltage level if it is supplied for a short time.
With this option, the charging efficiency is about 99%, and the cell remains cold during the entire charge time. True, some lithium-ion batteries still heat up at 4-5C when they reach full charge.
Perhaps this is due to protection or due to high internal resistance. For such batteries, the charge should be stopped when the temperature rises above 10ºC at a moderate rate of charge.
Li-ion batteries in the charger on charging. The indicator shows the full charge of the batteries. Further process threatens battery damage
Full charging of cobalt-blended systems occurs with a threshold voltage value. In this case, the current drops by up to 3-5% of the nominal.
The battery will show a full charge and when a certain level of capacity is reached, which remains unchanged for a long time. The reason for this may be increased self-discharge of the battery.
Increase charge current and saturation charge
It should be noted: an increase in the charge current does not accelerate the achievement of a state of full charge. The lithium-ion battery reaches its peak voltage faster, but it takes longer to charge the battery to full capacity. However, charging the battery with high current quickly increases the battery capacity to about 70%.
Lithium-ion batteries do not support mandatory full charge, as is the case with lead-acid devices. over, just such a charging option is undesirable for Li-ion. In fact, it is better not to fully charge the battery, because high voltage “strains” the battery.
The choice of a lower voltage threshold or full removal of the saturation charge helps to extend the life of the lithium-ion battery. True, this approach is accompanied by a decrease in the time of the return of battery energy.
It should be noted here: household chargers, as a rule, operate at maximum power and do not support charging current (voltage) adjustments.
Manufacturers of household chargers for lithium-ion batteries consider the long life less important than the cost of complicating circuit designs.
Li-ion Battery Chargers
Some cheap home chargers often use a simplified technique. Charge a lithium-ion battery for one hour or less, without switching to a saturation charge.
The ready indicator on such devices lights up when the battery reaches the voltage threshold in the first stage. The state of charge in this case is about 85%, which often satisfies many users.
This domestic charger is offered to work with different batteries, including lithium-ion batteries. The device has a voltage and current regulation system, which is already good
Professional chargers (expensive) differ in that they set the threshold of the charging voltage lower, thereby extending the life of the lithium-ion battery.
The table shows the calculated power when charging such devices at different threshold voltage values, with and without saturation charge:
As soon as the lithium-ion battery begins to charge, a rapid increase in voltage is noted. This behavior is comparable to lifting a load with a rubber band when there is a lag effect.
The capacity will eventually be full when the battery is fully charged. This charge characteristic is typical for all batteries.
The higher the charge current, the brighter the effect of the rubber tape. Low temperature or the presence of a cell with high internal resistance only enhance the effect.
The structure of a lithium-ion battery in its simplest form: 1- minus copper bus; 2. positive tire made of aluminum; 3. anode of cobalt oxide; 4- cathode made of graphite; 5. electrolyte
Assessing the state of charge by reading the voltage of a charged battery is impractical. Measuring open circuit voltage (idle) after the battery has been at rest for several hours is the best indicator.
As with other batteries, temperature affects idle in the same way that it affects the active material of a lithium-ion battery. The charge status of smartphones, laptops and other devices is estimated by counting pendants.
Lithium-ion battery: saturation threshold
The lithium-ion battery is not able to absorb excess charge. Therefore, when the battery is fully saturated, the charge current must be removed immediately.
A constant current charge can lead to metallization of lithium cells, which violates the principle of ensuring the safe operation of such batteries.
To minimize defect formation, you should turn off the lithium-ion battery as soon as possible when the charge peak is reached.
This battery will not take charge as much as it should. Due to improper charging, he lost his main energy storage properties.
As soon as the charge stops, the voltage of the lithium-ion battery begins to drop. The effect of reducing physical stress is manifested.
For some time, the open circuit voltage will be distributed between unevenly charged cells with a voltage of 3.70 V and 3.90 V.
Here, the process is also noteworthy when a lithium-ion battery, which has received a fully saturated charge, begins to charge the neighboring battery (if one is included in the circuit), which has not received a saturation charge.
When lithium-ion batteries are required to be constantly kept in the charger in order to ensure their readiness, bet on chargers having the function of short-term compensation charge.
Such a charger turns on if the open circuit voltage drops to 4.05 V / I and turns off when the voltage reaches 4.20 V / I.
Chargers designed for operational readiness or for standby mode often allow you to lower the battery voltage to 4.00V / i and charge lithium-ion batteries only to the level of 4.05V / i, preventing them from reaching the full level of 4.20V / i.
Such a technique reduces physical stress, inherently related to technical stress, and helps to extend battery life.
Charge of cobalt-free batteries
Traditional batteries have a nominal cell voltage of 3.60 volts. However, for devices that do not contain cobalt, the denomination is different.
So, lithium-phosphate batteries have a nominal value of 3.20 volts (charging voltage of 3.65V). And the new lithium-titanate batteries (made in Russia) have a nominal cell voltage of 2.40V (charging 2.85).
Lithium-phosphate batteries are energy storage devices that do not contain cobalt in their structure. This fact slightly changes the charging conditions of such batteries.
For such batteries, traditional chargers are not suitable, as they overload the battery with a risk of explosion. Conversely, a charging system for cobalt-free batteries will not provide a sufficient 3.60V charge for a traditional lithium-ion battery.
Excessive Li-ion Battery
The lithium-ion battery operates safely within specified operating voltages. However, the operation of the battery becomes unstable if it is charged above operating standards.
Long-term charging of a lithium-ion battery with a voltage above 4.30V, designed for a working rating of 4.20V, is fraught with metallization of the anode with lithium.
The cathode material, in turn, acquires the properties of an oxidizing agent, loses state stability, and emits carbon dioxide.
The pressure of the battery cell increases and if the charge continues, the internal protection device will operate at a pressure of 1000 kPa to 3180 kPa.
If the pressure increase continues even after this, the protective membrane opens at a pressure level of 3.450 kPa. In this state, the cell of the lithium-ion battery is on the verge of explosion and ultimately this is exactly what happens.
Structure: 1. top cover; 2. upper insulator; 3. steel can; 4. lower insulator; 5. anode tab; 6. cathode; 7. separator; 8. anode; 9. cathode tab; 10. outlet; 11. PTC; 12. gasket
The operation of the protection inside the lithium-ion battery is associated with an increase in the temperature of the internal contents. A fully charged battery has a higher internal temperature than a partially charged one.
Therefore, lithium-ion batteries are seen to be safer on the condition of low-level charging. That is why the authorities of some countries require the use of Li-ion batteries in aircraft, saturated with energy not exceeding 30% of their full capacity.
The threshold of the internal temperature of the batteries when fully loaded is:
- 130-150 ° C (for lithium cobalt);
- 170-180 ° C (for nickel-manganese-cobalt);
- 230-250 ° C (for lithium manganese).
It should be noted: lithium-phosphate batteries have better temperature stability than lithium-manganese batteries. Lithium-ion batteries are not the only ones that pose a danger in conditions of energy overload.
For example, lead-nickel batteries are also prone to melting, followed by fire, if energy saturation is performed with violations of the passport regime.
Therefore, the use of chargers ideally suited to the battery is of paramount importance for all lithium-ion batteries.
Some conclusions from the analysis
Charging lithium-ion batteries has a simplified technique compared to nickel systems. The charging circuit is straightforward, with voltage and current limitations.
Such a circuit is much simpler than a circuit that analyzes complex voltage signatures that change as the battery is used.
The energy saturation process for lithium-ion batteries is interruptible; these batteries do not need to be fully saturated, as is the case with lead-acid batteries.
Controller circuit for low power lithium-ion batteries. A simple solution and a minimum of detail. But the circuit does not provide cycle conditions under which a long service life is maintained.
The properties of lithium-ion batteries promise the benefits of a renewable energy source (solar panels and wind turbines). As a rule, a solar panel or a wind generator rarely provides a full battery charge.
For a lithium-ion, the lack of stable charging requirements simplifies the charge controller circuit. The lithium-ion battery does not require a controller that balances voltage and current, as required by lead-acid batteries.
All household and most industrial lithium-ion chargers fully charge the battery. However, the existing devices for charging lithium-ion batteries for the most part do not provide voltage regulation at the end of the cycle.
The lack of this functionality results in a reduction in battery life. Manufacturers of imperfect chargers explain the incident by the complexity of the circuit and the general rise in price of devices.
Today, special batteries are used for mobile, household appliances and tools. They differ in operational characteristics. In order for the battery to work for a long time, without failures, the requirements of the manufacturers of the products presented must be taken into account.
One of the most popular types today are Li-Ion batteries. How to properly charge this type of battery, as well as the features of its operation should be considered in detail before operating the device.
One of the most common types of batteries today is the Li-Ion type. Such devices have a relatively low cost. However, they are undemanding to operating conditions. In this case, the user rarely raises the question of how to properly charge a cylindrical Li-Ion 18650 battery or another variety.
Most often, the presented batteries are installed in smartphones, laptops, tablets and other similar devices. The presented batteries are characterized by durability and reliability. They are not afraid of complete discharge.
One of the main features of the presented products is the lack of a “memory effect". These batteries can be charged at almost any convenient time. A “memory effect" occurs when the battery is not fully discharged. If a small amount of charge remains in it, over time, the battery capacity will begin to decline. This will lead to insufficient power supply of the equipment. In lithium-ion batteries, the “memory effect" is minimized.
The design of the lithium-ion battery depends on the type of device for which it is intended. A battery called a “bank” is used for a mobile phone. It has a rectangular shape and includes one structural element. Its rated voltage is 3.7 V.
The battery of the presented type for a laptop has a completely different design. There can be several separate battery cells in it (2-12 pieces). Each of them has a cylindrical shape. These are Li-Ion 18650 batteries. How to charge them properly is indicated in detail by the manufacturer of the equipment. This design incorporates a special controller. It looks like a microchip. The controller controls the charging procedure, does not allow exceeding the nominal value of the battery capacity.
Modern batteries for tablets and smartphones also include a charge control function. This significantly extends the battery life. It is protected from various adverse factors.
Considering how to properly charge the Li-Ion batteries of a phone, laptop and other equipment, you need to pay attention to the features of the presented device. It should be said that lithium-ion batteries do not tolerate deep discharge and overcharge. This is controlled by a special device that is added to the design (controller).
It is ideal to maintain the charge of the type of battery presented at a level of 20 to 80% of full capacity. This is monitored by the controller. However, experts do not recommend leaving the device connected to charging constantly. This significantly reduces battery life. In this case, a constant load acts on the controller. Over time, its functionality may decrease due to this.
In this case, the controller also will not allow deep discharge. He just disconnects the battery at some point. This protective function is essential. Otherwise, the user could accidentally recharge or discharge the battery too much. Also in modern-style batteries, high-quality protection against overheating is provided.
To understand how to properly charge a Li-Ion battery (new or used), you need to consider the principle of its operation. This will assess the need to control the level of discharge and charge of the device.
Lithium ions in the battery of the present type move from one electrode to another. In this case, an electric current appears. Electrodes can be made of different materials. This indicator to a lesser extent affects the operational characteristics of the device.
Lithium ions grow on the crystal lattice of electrodes. The latter, in turn, change their volume and composition. When the battery is charged or discharged, one of the electrodes has more ions. The higher the load on the metal structural elements that lithium exerts, the shorter the life of the device will be. Therefore, it is better not to allow a high percentage of ion deposition on one or the other electrode.
Before using the battery, you need to consider how to properly charge the Li-Ion battery of a smartphone, tablet and other equipment. There are several ways to do this.
One of the most correct decisions will be the use of a charger. Each manufacturer supplies it complete with electronic equipment.
The second option is to charge the battery from a desktop computer connected to a household network. A USB cable is used for this. In this case, the charging procedure will be longer than when using the first method.
You can perform this procedure using the cigarette lighter in the car. Another less popular way is to charge a lithium-ion battery using a universal device. It is also called the "frog." Most often, such devices are used to recharge smartphones batteries. The contacts of this device can be adjusted in width.
Charge a new battery
There are certain recommendations on how to properly charge a new Li-Ion battery. To do this, read the manufacturer’s instructions. This process is not difficult, but the recommendations of specialists should not be neglected.
The new battery must be put into operation correctly. To do this, the phone, tablet or other equipment must be completely discharged. Only when the device turns off can it be connected to the network. The controller will not allow the battery to discharge too much. It is he who turns off the device when the battery loses capacity to a predetermined level.
Next, you need to connect electrical equipment to the network using a standard charger. The procedure is performed until the indicator lights up in green. You can leave the device on the network for a few more hours. This procedure is carried out several times. In this case, you do not need to specifically discharge the phone, tablet or laptop.
Knowing how to properly charge Li-Ion batteries can significantly extend the battery life. Experts recommend the correct procedure for this process for a new battery. After that, it is not advisable to discharge the battery completely. When the indicator shows that the battery capacity is only 14-15%, it needs to be connected to the network.
It is also not recommended to charge the battery up to 100%. When the indicator shows 80-90%, the device can be disconnected from the network. This is the ideal principle for charging a regular lithium-ion battery.
It is also not recommended to use other devices to fill the battery capacity, except for the regular one. It has the most acceptable current ratings available for a specific battery model. Other options can be used only in case of emergency.
There is one more nuance that you need to find out when studying the question of how to properly charge Li-Ion batteries. Experts recommend periodically calibrating this device. It is held every three months.
First, in normal mode, you need to discharge the electrical equipment before it turns off. Then it is connected to the network. Charging continues until the indicator lights up green (battery is 100% charged). This procedure must be performed for the correct operation of the controller.
In such a procedure, the battery circuit board determines the limits for charging and discharging. This is necessary to ensure the normal operation of the controller, avoiding failures. In this case, a standard charger is used, which is supplied by the manufacturer complete with a phone, tablet or laptop.
In order for the battery to work as long and efficiently as possible, you must also consider how to properly charge the Li-Ion battery for storage. In some cases, a situation may arise when the device for powering the equipment is temporarily not used. In this case, it must be properly prepared for storage.
The battery is charged up to 50%. In this state, it can be stored for a long time. However, the ambient temperature should be about 15 ºС. If it increases, the rate of loss of battery capacity will increase.
If the battery needs to be stored for a sufficiently long time, it needs to be completely discharged and charged once a month. The battery gains 100% of its predetermined capacity. Then the device is discharged again and charged already up to 50%. If you regularly perform this procedure, you can store the battery for a very long time. After that, it will be fully operational.
Having considered how to properly charge Li-Ion batteries, you can significantly extend the life of this type of battery.
Lithium-ion batteries are not picky, but they must be properly looked after to work properly. A few simple rules will help significantly increase battery life. We will determine how to properly charge Li-Ion batteries so that they work for a long time.
A few simple rules for your battery.
The lithium-ion battery should be used as follows:
- complete discharge every three months
- do not discharge completely the rest of the time
- store partially charged
- avoid overheating
Now, first things first
This type of battery does not have a memory effect, because the owner can charge them without waiting for a complete discharge. Typically, the manufacturer calculates the service life by the number of discharge cycles. A quality battery can easily withstand 500-600 times. If you start to charge the battery in a timely manner. more precisely, when its charge indicator drops to 10-15 percent, then its service life will increase by about half.
But there is an important fact. sometimes it is useful to completely discharge the battery. A full charge during the entire operating time can also be harmful.
Experts advise to discharge the battery completely once a quarter, and then charge it to the maximum and keep it connected to the network for ten hours.
Why are batteries stored charged?
If you are going to store the battery, then the best condition for it will be a charge level of 50 percent. A plus temperature is needed, preferably around 20 degrees. If you leave the battery on the shelf for a long time, then its capacity will gradually begin to fall. If you postpone a fully discharged battery for a long time, then this situation is even worse, there is a high probability that then the device with it will not even start.
How many batteries hold a charge?
Batteries are discharged very slowly, it takes 5-7 percent of the charge per month. Manufacturers recommend using exclusively original chargers. Use only high-quality items; buying Chinese fakes can adversely affect battery life.