The function of the battery protection board

Over discharge protection of the phone battery protection board: when the battery is about to run out, when the voltage reaches a required minimum value, the protection board will also close and cannot discharge. Therefore, the product will automatically shut down, forming an over discharge protection function.

Overcharge protection of the phone battery protection board: when charging the product, when the voltage reaches the maximum battery voltage (4.2V), the protection board will automatically power off and close, indicating that charging is not continued. A kind of overcharge protection.

Short circuit protection of the phone battery protection board: when the battery is inadvertently short circuited, the protection board will automatically close within a few milliseconds and will not be powered on. At this time, it is OK even if the positive and negative electrodes touch one. A short circuit protection will not cause explosion.

Overcurrent protection: when the battery is discharged, the protection board will have a maximum limiting current, which is different for different products. When the discharge exceeds this current, the protection board will also close automatically