Rescue Method of Super discharge Lithium Battery

We do the development of mobile phones, often encounter some mobile phones put for a long time, over the battery, unable to charge.

Although you can use a hook battery or clamp battery, but the contact is not good or short-circuit, after all, it is not as convenient as a matching battery.

Cell phone batteries are also not uniform, various, for those unique specifications of the battery, the number of small, difficult to find, resuscitation is still valuable.

Let me say my way:

1. Strip the outside sticker first, if it can be stripped without damage, it is best not to be.

2. Separate the core from the outer frame. There is a protective plate on the core. Never mind it. Be careful not to break it.

3. Charge. We peel it out so we can bypass the shield and charge it. This must have a controllable power supply. First adjust the voltage to 4.2 V and set the current to small. With the clip directly to the two poles of the battery, the general shell is the positive pole, this should be clear. After the connection, adjust the current to 100mA, charge for a while, and the voltage goes up. After the voltage is greater than 3.5 V, the point current can be increased. Fill it to about 3.7 V.

4. Install. Put on the outer frame, stickers, if the original sticker is torn, you can use the box belt or other tape.

Then it can be recharged normally, because we have less charge in step 3, just to activate the battery, so we can use it after charging.

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