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How to restore the performance of a Li-Ion battery: several available tips. AA element holders. An attempt to restore the capacity of used NiCd and NiMh batteries. How to restore finger batteries

Which are installed in every cell phone, are very capacious power supplies. They last quite a long time, but sooner or later you have to deal with the fact that the battery runs out. This is especially true for those who spend a lot of time on the Internet. The battery discharges quickly even if its owner is a passionate gaming enthusiast. There are plenty of factors that contribute to the discharge of a mobile phone battery. But replacing the battery with a new one is not always possible. This raises the question of how to restore a phone battery and whether it can be repaired so that it lasts longer. Fortunately, there are several ways to revive your battery that you can always use.

Recovery using a special charger

Which has stopped producing voltage due to a deep discharge, can be done using a “Chinese clone” of the popular Imax V6 charger and a multimeter. Such a charger is widely available, and it perfectly restores the battery at home.

First you need to check the battery itself by connecting a multimeter to it and setting the device to voltage measurement mode. If the battery is deeply discharged, the multimeter will reflect this with minimum U values in millivolts.

The bottom line is often that the controller “gets in the way” of measuring the actual amount of voltage in the battery. There are two pins, plus and minus, going directly from the battery to the controller. The voltage at the terminals is usually about 2.6 V. Of course, for lithium batteries this is very low. But in order for the controller to start up and begin to output voltage, you need to charge the battery to at least 3.2 V . Then the controller will begin to “understand” the battery and reflect real voltage readings.

We ground the negative wire, connect the red wire to the power supply. There is no need to set a high current. The Imax device is convenient because it has several charging modes designed for one or another. In the charger we set the appropriate mode (lithium-ion or lithium-polymer batteries). We set the voltage to 3.7 V for one can, and the charging current to 1 A - this will be enough.

The tension gradually begins to rise. This means that the recovery is successful. After some time it will reach 3.2 volts, and the battery will “swing”. After that, it can be placed in a phone or tablet, or recharged using a “native” charger.

After some time, we check the controller to see if it shows voltage. If it shows, try disconnecting the phone battery from the charger. If the voltage remains the same (about 3.5 V), this is very good. Now the battery will be perceived by the tablet or phone.

Of course, before reviving the battery, it will need to be disassembled, and the battery will partly lose its beautiful appearance, but this is not so important. After restoration, it should be carefully inserted back into the phone, and now it will work for some time, depending on what percentage of the capacity is retained in the revived battery.

Recovery using a resistor and “native” memory

There is an even simpler way to restore a phone battery, for which you don’t have to purchase a specialized charger, but you can use what you have on hand.

For this you will need:

power supply from 5 to 12 V (you can use a “charger” from your phone);
resistor device with a minimum rating of 330 ohms, maximum 1 kohm.

The connection diagram is very simple: the “minus” of the charger is connected to the “minus” of the battery, and the “plus” is output by a resistor to the “plus” of the battery. Then power is applied and the battery voltage begins to rise. It will be enough to raise its level to 3 V, as when charging with imax. It will take a little time for it to reach this level, only 10-15 minutes. After this, you can use the battery as usual.

Recovering a Lithium-Ion Battery Using a Fan

For this you will need:

fan;
12 volt power supply.

Any power supply will be suitable for this purpose. The main thing is that its output voltage should not be lower than 12 V. We connect the “minus” connector of the power supply to the “minus” of the fan, and the “positive” connector to its “plus” and manually fix it on the battery in this way. When we turn on the device, the fan starts working. This means that current is already flowing into the battery.

There is no need to hold the battery for a long time: 30 seconds will be enough to raise the voltage. Usually, after such a “repair”, the U value rises to 3 V, which once again ensures that real voltage numbers are “passed” through the controller board. It starts reading everything correctly and the battery revival is completed successfully.

Recovery method by recharging from another battery

Probably, novice electronics enthusiasts will also be interested in knowing how to revive a phone battery using another battery (if, of course, you have one on hand). To do this you will need any other 9 volt battery, some electrical tape and a regular thin wire.

The wires must be connected to the battery contacts , which we will reanimate. There must be a separate wiring for each contact.
Under no circumstances connect the plus and minus contacts with only one wire. A short circuit may occur, and it will be impossible to restore the battery.
Connections should be secured with electrical tape , having previously made a mark with a marker which wire is connected to which contact.
Wiring from the “positive” pole Connect a nine-volt battery to the “positive” contact of the battery being restored.
Connect the negative contact using the same principle.
Also secure all contacts with electrical tape. so that the wiring does not move away during the “reanimation” process.
Now you need to wait a while , monitoring the condition of the battery: it should warm up a little.
When the battery becomes extremely warm, it must be disconnected from the “donor” battery. , insert it into your mobile phone and check its operation.

When you turn on your cell phone, you should immediately check the battery charge level and charge the phone in normal mode.

The popular “refrigerator” method: they say it works

Many sources also tell how to revive a dead lithium-ion battery by simply putting it in the freezer for 12 hours. On the one hand, it seems funny. But those who have actually tried to do this claim that this method really works.

It is recommended to place the battery in a tight bag so that no water gets into it. It is better to take a plastic bag. Paper and foil are not suitable because they allow water to pass through. The packaged battery is placed in the freezer for 12 hours - it is claimed that by freezing the battery it can restore some capacity , and this will allow you to charge it in the usual way.

After removing the battery from the freezer, you need to give it a chance to warm up to room temperature, after which you can try to start charging it. Before charging, be sure to wipe the battery dry.

When restoring lithium-ion batteries in any available way, you should remember that their “aging” directly depends on a certain period of time. The shelf life of such batteries is, on average, two years. After this, their capacity may be significantly lost. And in the case of a very deep discharge, not all batteries can be “resuscitated.” Also, when using a nine-volt battery as a “donor” battery, do not recharge those batteries that are working from it: this can lead to a fire.

A few words about. Typically, the battery swells under the influence of mechanical or temperature factors. Gases have formed inside it, and they are always potentially dangerous.

Of course, on the Internet you can find a lot of videos about how some craftsmen restore a swollen battery by piercing it with an ordinary needle or awl to “let the air out.” From the outside it looks very confident and safe. But in certain cases, inflammation and even poisoning can occur. It all depends on the level at which the chemical reaction inside the battery is currently located. If it is swollen, it is strongly not recommended to “resuscitate” it. It’s better not to take risks, but to look for a new one, although sometimes it can be difficult to find a suitable battery for a particular model of gadget.

When batteries run out, we often buy new ones. But what if there are some special batteries for our favorite wall clocks, which are difficult to get? It is much easier to restore them than to look for new ones.

The process of restoring nickel-cadmium and nickel-metal hybrid batteries is quite long and painstaking. But there is one simple and affordable way to recover. First, we need to assemble a charger-restorer circuit, and it consists of a mains transformer and a rectifier diode.

A diode connected in the forward direction cuts off the negative half-cycles of the AC sine wave, resulting in a kind of pulsating charging current.

Transformer. To carry out this operation, you will need a transformer with a secondary winding of 16-24 Volts with a rated current of 2-4 Amperes.

Diode - selected with a current of more than 5 Amps; powerful SCHOTTTKY diodes from computer power supplies are excellent. During operation, the diode overheats greatly, so it must be installed on a heat sink; additional cooling may be required (forced heat removal with a cooler).

The recovery process itself consists of two main cycles. First, take the battery (one nickel battery bank has a voltage of 1.2-1.3 Volts), disconnect all the banks.

The process is carried out WITH ONE CAN of battery. We connect the cathode of the semiconductor diode to the positive of the battery, and the free end of the transformer winding to the negative. BUT! The charging process in this way is short-term, with some interruptions. After connecting the charger and recovery device to the battery, the transformer is connected to a 220 Volt network for only 2-3 seconds, then turned off and taken a break for 10-15 seconds, then turned on again for 2-3 seconds. The cycle is repeated 15 times, after which they take a break for 5 minutes to allow the battery to cool down (during such charging, the battery may overheat, so it is advisable to place it in a vessel with water while charging). After 5 minutes, the transformer is turned on again, but this time we charge not 3, but 5 seconds - we repeat the process 3-5 times.

The recovery process is now complete, and you can now put the battery on a normal charge for 5-8 hours. The output current of standard chargers should be 1/10 of the battery capacity, for example - if the battery capacity is 1000 mA/h, then the charging current should be in the range of 90-110 mA.

A battery restored in this way can last another 4-6 months, after which it can be restored again in the same way, but each time the battery will last less and less.

AA batteries are an indispensable item in household appliances. Autonomous power supplies are used everywhere - in a variety of players, watches, remote controls, and so on. Like cheap zinc (mangan) or as they are popularly called, galvanic batteries fail very quickly. Although they also have a big plus - low (compared to batteries) self-discharge. There are some types of batteries that have a very long service life, some of the well-known ones include Duracell and Energizer.

These branded batteries have long secured their place in the market for their high quality and very long service life; the current of such batteries is several times higher than the current of ordinary voltaic batteries. But the time comes when they too<умирают>and they need to be thrown away.

However, there is no need to rush into this; they can still serve you faithfully for a long time. Now we will consider the question of how to use such a battery. For a long time I tried to find ways to charge such batteries on the Internet, but only after wasting my time I decided to develop my own method. Reviews on various forums about charging alkaline batteries were disappointing - everyone confidently insisted that the battery would explode when charging, you need to charge it with a low current, and even then it won’t hold a charge for long. In short, they cannot be restored and you just need to throw them away. And then it was decided: why charge them? better to restore! As you know, any battery or battery must contain electrolyte, and the reason for the unsuitability of batteries is a banal loss of capacity, but how to return this capacity? There's an answer!

We take the battery and, using a sharp object, remove its back part. There you will find a metal rod (usually copper or brass). The batteries are called alkaline batteries because the electrolyte is an alkaline solution (lye). Using a syringe, drop a few drops of alkaline acid into the battery and immediately insert the rod.

After this, the battery needs to be warmed up for a minute. Then it needs to be cooled sharply by keeping it in the freezer for about an hour. Then we take it out from there and hold it in our hand in order to warm it up a little again (you can put it on a low stove). The photographs show the result of battery reanimation. At first, the battery voltage was almost zero. Afterwards we get a full-fledged battery, but with a voltage of 1.2-1.3 volts (the voltage of nickel batteries).

At the same time, the battery has a fairly large current - up to 1 ampere! The reanimated battery can be used anywhere. The battery is like new and note that you don’t need to charge it! This recovery process can be repeated 5-7 times, and after that you can safely throw away the battery, since it has already given all it can! This concludes our conversation,

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Content

During the use of a mobile device, the battery will definitely consume its resource and “grow old”. This manifests itself in a rapid decrease in charge and slow charging. Sometimes the device simply does not turn on after turning off and does not respond to button presses. This is a characteristic and common phenomenon for lithium batteries, which are currently used in all smartphones. You can purchase a new charge source, but if you want to save money, there are options for resuscitating the battery yourself.

How does a telephone battery work?

Most gadgets have a battery function. There are several types of batteries for phones:

Ni-Cd – nickel-cadmium;
Ni-Mh – nickel metal hydride;
Li-Ion – lithium-ion.

NiCd batteries have the largest charge capacity; they are easy to manufacture, store and operate. Often used to power medical equipment, radios, high-power instruments and professional video cameras. NiMh batteries generate more heat during charging, requiring the use of a complex algorithm to determine full charge. For this reason, most of these batteries have an internal temperature sensor. NiMh takes a long time to charge (it takes twice as long to replenish the NiCd charge), but their capacity is much greater.

Li-Ion batteries, when recalculated per kilogram of weight, are 2 times higher than NiCd. For this reason, lithium-ion batteries are now used in all phones and laptops, where in addition to battery life, the weight of the product is also important. The design of the battery itself is very simple: two graphite sheets of lithium and cobalt oxide, which are lubricated with electrolyte and rolled into a roll.

Why is the battery draining?

After a year or a year and a half, smartphone owners begin to notice a decrease in the performance of the device; the charge quickly runs out. This can happen for several reasons, some of them can be solved programmatically (disabling unnecessary functions, wi-fi, cleaning viruses), while others can only be technically corrected by restoring the battery capacity. The following factors are popular reasons why the battery drains.

The vast majority of smartphones run on the Android operating system, which, due to its complexity and open source code, is prone to failures; optimization of the OS is at a low level. Several dozen programs run automatically in the background; even in standby mode (with the screen off), they continue to “eat up” the charge and lead to a rapid decrease in battery capacity. Many of these background programs are not needed by the average user and should be disabled.

Viruses

The Android system is free, which is why it has become so popular, hackers could not ignore this and began to create malicious programs for it. The activity of such viruses leads to a rapid decrease in the phone’s battery charge. In addition, the performance of smartphones drops even with strong processors. The following signs (except for antiviruses) will help determine the presence of “pests”: the appearance of advertisements in the wrong places, an increase in the temperature of the gadget’s body, and system slowdown.

Defective battery

Battery failure leads to rapid loss of energy. This occurs more often with prolonged use, usually after two years. This is an inevitable process of consuming equipment resources. Sometimes a decrease in the nominal capacity of a battery occurs due to contamination of the anode and cathode. This leads to a slowdown in physical and chemical processes that affect the battery’s ability to release the accumulated charge. Using some methods, you can achieve the original battery value.

Battery capacity and expiration date

Recovery processes with constant use of the device will not be able to return one hundred percent to the same amount of voltage. Over time, the battery's power decreases, it wears out and becomes unusable. Li-Ion batteries have a shelf life of 2 years from the date of manufacture. During this period of time, from 20% to 35% of their power is lost. Restoring an old battery is not an easy task, so pay attention to the manufacturing date of the phone.

How to check your phone battery

For the test, you need a device called a voltmeter, which helps measure the voltage of the equipment. It is recommended to first perform a visual inspection of the battery. If the battery was in operation for a long time, then its structure could be subject to deformation, for example, swell. If liquid gets on the contacts, it will oxidize. These factors affect the battery capacity and reduce the specific value. To check the battery you need:

remove the battery from the device;
attach the positive contact of the voltmeter to the positive pole;
do the same with the negative;
in the settings, set the nominal value of the measured voltage.

The voltage that you received during measurement will display the state of charge of the battery. To evaluate the indicator, you can use the following values:

less than 1 V – the battery needs to be charged;
about 2 V – the battery is charged, the capacity is average;
3.6-3.7 V – fully charged battery with high capacity.

Phone battery recovery

If you wish, you can try to restore the “life” of the battery using some methods. Restoring a smartphone battery is a temporary measure; the device’s lifespan is not endless, so at some point the battery will still have to be replaced. Below are methods for increasing battery capacity that you can do yourself at home. Some will require additional tools and the ability to work with their hands. If you are new to this area, it is better not to restore it, but to buy a new battery.

Using a special charger

You can restore a Li-Ion battery using a multimeter and an Imax B6. The latter device is easy to buy, it is well suited if you need to resuscitate the battery at home. First, we check the battery itself using a multimeter. Connect it, setting it to voltage measurement mode. If there is a deep discharge, the multimeter will show this in the minimum U value in millivolts.

Sometimes the controller does not allow you to measure the actual amount of voltage. There are two terminals - plus and minus, which go directly from the battery to the controller. The voltage at the terminals is usually 2.6 V, but for lithium batteries this is small; to get the real voltage you need to charge the battery to 3.2 V. Then the multimeter will begin to reflect the real voltage. It is necessary to ground the negative wire and connect the red wire to the power supply; there is no need to set a high current.

Imax is convenient because it supports several modes, which differ for different types of phone batteries. Activate the appropriate mode (lithium-polymer or lithium-ion), set the voltage to 3.7 V, and the charge to 1 A. The voltage will begin to rise, indicating successful restoration of capacity. The indicator should reach 3.2 Volts and the battery will “swing”. Then you can insert it back into your tablet, phone, or fully charge it using your own device.

Restoring phone battery capacity from another battery

You will need any other 9 Volt battery, electrical tape, and a thin simple wire. This DIY phone battery restoration will be of interest to all electronics lovers. You can restore capacity using the following algorithm:

Connect the wires to the contacts of the battery that needs to be restored. Each pole needs its own.
You cannot connect plus and minus with the same wire, this will lead to a short circuit and you will no longer be able to restore the battery.
Secure the contacts with electrical tape, marking them with a + and - marker.
Connect the positive terminal to the “+” on the 9-volt battery, and the negative terminal in the same way.
On this side, also secure the contacts with electrical tape.
After some time, the battery should begin to heat up.
When the battery becomes noticeably warm, you need to disconnect it from the “donor” and put it in the phone to check its operation.
After turning it on, immediately check the charge level and charge your mobile phone in standard mode.

Using a resistor and a “native” charger

This method is simple, you do not need any special devices or devices, you will only need your original charger. Phone battery repair will require the following:

resistor device with a nominal value of at least 330 Ohms, maximum – 1 kOhm;
power source 5-12 V (phone charger is suitable).

To restore the battery you need to follow the following simple connection diagram: minus from the adapter to the minus of the battery, plus is output through a resistor to the plus. Then you need to apply power and the voltage on the battery will begin to increase. You should bring it up to 3 V, this will take 10 to 15 minutes. Then you can use the battery as usual.

Recovering your phone battery using a fan

You will definitely need a power supply with an output voltage of at least 12 V. Connect the corresponding one from the device to the negative connector of the fan, also connect the negative one and manually fix the wires on the battery. Connect the power supply to the outlet, the fan should start spinning, which indicates that current is being supplied. You should not hold the charge for a long time; 30 seconds are enough to reach the required U value. This will help “revive” the battery and charge it without problems from a regular outlet.

Battery resuscitation with cold

This option on how to restore a phone battery rarely works, but you can try because there is no risk of ruining it. It is necessary to place the battery in a plastic bag (foil or paper are not suitable) to prevent water from getting into the phone. To revive your phone battery, you need to put it in the refrigerator (freezer) for 12 hours. After cooling, let it warm up in the room, remember to wipe it dry. By freezing it is possible to restore a little capacity so that you can charge it through a regular outlet.

How to restore a lithium battery after a deep discharge

If the device is not used for a long time, a deep discharge may occur. The voltage drops to unacceptable levels, the device is completely turned off by the controller and it cannot be charged from the outlet. In this case, the battery can only be restored by unsoldering the protection system. Then power is carried out using a special device, for example, Turnigy Accucell 6. The device itself will monitor the battery recovery processes.

Using the “Type” button you can select the charge program. Click on the “Start” button, then for Li-ion – 3.5 V, for Li-pol – 3.7 V. The current should be set to 10% of the rated capacity of the battery. To do this, press the “+” and “-” buttons. When the value reaches 4.2V, the mode will change to “voltage stabilization”. The device will emit an audio signal when charging is complete, and the message “Full” will appear on the screen.

When the battery is swollen

When the battery degrades, physical deformation may begin. The swelling makes the device unusable, but you can try to repair it. You need to find a kind of cap on the battery, which is located under the sensor board. Next you will need a needle or nail. Pierce this cap; this must be done carefully, separating the upper part with the sensor board and contacts from the battery case. Wait until all the accumulated gas comes out of the housing, then replace the metal plate. To do this you need:

place the battery on a flat surface;
place a plate on top;
it is easy to squeeze its body;
when it is level, solder the sensor board back;
Cover the puncture site with waterproof glue.

Fully charging and discharging your phone battery

This is the simplest, but ineffective way to restore battery capacity. You need to “drive” the battery several times until it is completely discharged, and then completely restore it. For this:

download a resource-intensive utility (AnTuTu) or game and turn off the phone completely (until it turns off);
connect the power and wait for 100% charging;
repeat the previous steps 3-4 times.

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However, there is no need to rush into this; they can still serve you faithfully for a long time. Now we will consider the question of how to restore such a battery. For a long time I tried to find ways to charge such batteries on the Internet, but only after wasting my time I decided to develop my own method. Reviews on various forums about charging alkaline batteries were disappointing - everyone confidently insisted that the battery would explode when charging, you need to charge it with a low current, and even then it won’t hold a charge for long. In short, they cannot be restored and you just need to throw them away. And then it was decided: why charge them? better to restore! As you know, any battery or battery must contain electrolyte, and the reason for the unsuitability of batteries is a banal loss of capacity, but how to return this capacity? There's an answer!

After this, the battery needs to be warmed up for a minute. Then it needs to be cooled sharply by keeping it in the freezer for about an hour. Then we take it out from there and hold it in our hand in order to warm it up a little again (you can put it on a low stove). The photographs show the result of battery reanimation. At first, the battery voltage was almost zero. After restoration, we get a full-fledged battery, but with a voltage of 1.2-1.3 volts (the voltage of nickel batteries).