How to restore the performance of a Li-Ion battery: a few tips available
Modern storage batteries remain one of the biggest challenges for both manufacturers and consumers. And it's not so much about the potential risk of fire, but about the gradual depletion of the power source itself. Therefore, you should not be surprised that with daily charging, the batteries can withstand a year or two of active use, after which their capacity drops dramatically and it becomes problematic to use your favorite gadget. You cannot completely reanimate a deceased battery, but you can extend the period of active use while you are looking for a replacement. We will talk about this today.
The recommendations below are designed for a technically trained user, therefore, if you do not know from which side to approach the soldering iron, it is better either to contact the services of a service center, or immediately go to the store for a new battery.
Phone with modern Li-Ion rechargeable battery
Method number 1
He will be able to help in cases where, due to prolonged work, gases begin to accumulate inside, as a result of which the battery swells and does not hold a charge well.
Required tools and materials: a soldering iron, a little epoxy, a thin needle, a flat, heavy leveling object.
Disconnect the battery case from the upper block with the sensor as carefully as possible.
We separate the electronic sensor.
There should be a cap under it, inside which the control electronics are hidden. We carefully pierce it, for which a thin needle is well suited. Remember that with a damaged filling it will no longer be possible to reanimate the battery.
The most crucial moment. We put the battery on the table and press it down with a press. Keep in mind: excessive force can render the battery unusable, and a lack of it, on the contrary, will not lead to the desired result. It is also categorically not recommended to use a vice or a device similar in purpose for repairs.
When you're done, put a drop of epoxy on the hole and solder the sensor.
Phone Battery Diagnostic Tools and Materials
Method number 2
He is not able to reanimate a battery with a significantly reduced resource, but he can slightly extend its life. You shouldn't count on much, but a reanimated battery will be able to provide power to a modern smartphone while you are looking for a replacement.
Necessary tools and materials: any power supply unit (5-12 V, current not less than 0.1 A), voltmeter or tester for voltage control, resistor (power not less than 500 mW, resistance from 330 to 1000 Ohm).
If you do not have a spare power supply, almost any complete one from active network equipment (switches, routers, modems) will do. First, you should make sure that the parameters of the current produced by them correspond to the required ones.
We release the contacts of the power supply and connect them to the dead battery: "minus" of the power supply with "minus" of the battery, and add a resistor to the "positive" line. Be sure to check the correct polarity with a multimeter.
When everything is done, plug the power supply into the mains. The procedure time is no more than 2-3 minutes. If possible, control the process with a tester: the maximum allowable voltage is no more than 3.3 V.
A few important notes
Do not leave a problem battery unattended during repairs. Cases of spontaneous combustion are not a theory, but a harsh reality.
Periodically check the temperature of the "client" with a remote thermocouple, electronic thermometer, or simply by hand. If the surface feels hot and not just warm to you, stop repairing immediately.
Excessive charging currents should not be used. The most you can afford is 50mAh. This parameter is calculated as follows: the power supply voltage of the power supply is divided by the capacity of the resistor. For example, if the first parameter is 12 V, and the second is 500 Ohm, then the charging current will be 24 mAh.
A standard 80mm computer fan can be used instead of a resistor.
It is also recommended to monitor the initial charging of a remanufactured battery to avoid spontaneous combustion.
Method number 3
The technique is controversial and questionable, but, according to reviews on specialized forums, it helps some users, because the responsibility for possible negative consequences lies with you.
Required tools and materials: working refrigerator.
Remove the battery, which does not show signs of life, from the smartphone and put a plastic bag, which should be placed in the freezer for 20-30 minutes.
Remove it from the device, let it warm up to room temperature, then charge it in the usual way.
Method number 4
A harmless but ineffective resuscitation technique. But if it seems to you that the battery in your smartphone is completely out of order, then why not give it a try?
Required tools and materials: Smartphone with standard charger.
Bring the battery to full discharge (when the phone no longer turns on). Any resource-intensive game or AnTuTu utility can help with this.
Fully charge the battery to the 100% mark.
Repeat steps 1 and 2 several times.
Method number 5
Almost all professional electricians will consider the following procedure sacrilege, but it has helped many users of old batteries.
Required tools and materials: razor blade, thin screwdriver, moment glue.
We remove the battery from the phone.
Peel off the sticker with technical characteristics.
Cut off the top plastic cover as much as possible, behind which the control electronics is hidden.
We find the main contacts.
For a moment we close them with any metal object.
We glue the top cover and let it dry.
Once again, we remind you that none of the above methods of resuscitation does not guarantee a 100% result, and all responsibility rests entirely on your shoulders. But if the battery has turned off completely, and the purchase of a new one is postponed for several days, it's worth a try. But if you rarely pick up a soldering iron and consider yourself a humanitarian, it is better to seek help from a friend who understands the topic.
