Lithium-ion battery protection board wiring method.

Some lithium-ion batteries the third is the temperature protection line, some is the battery information verification line (such as replaced non-original battery to prompt the alarm).

Lithium-ion batteries are all battery+protection board. 3 wires will only appear on the protection board, the battery will always have only 2 wires.

Lithium-ion battery has 2 kinds, obviously 3.7V is non-ferrous aluminum phosphate, you can directly change.

Replacement is very simple (pay attention to the positive and negative poles):

1: remove the packaging of the original battery, and then the soldering iron to separate the protective plate and battery.

2: Similarly then remove the protective plate of your new battery and connect the battery to the old protective plate.