Laptop batteries consume power even when the computer is turned off because of integrated control circuits. Since the battery starts charging as soon as the AC power is connected, the battery will charge and discharge repeatedly whenever the power is turned on or off, affecting battery life.

Battery protection board, as the name suggests, the lithium battery protection board is mainly for the rechargeable (generally refers to the lithium battery) play a protective role of integrated circuit board.

The seven functions of the battery protection board are as follows: Over charge protection: overcharge detection voltage, overcharge detection delay time, overcharge release voltage Over discharge protection: over discharge detection voltage, over discharge detection delay time, over disch......

Existing laptop, mobile phone, or lithium battery pack power system will be equipped with battery protection board, overcharge protection is one of the basic functions.

The protection function of lithium battery is usually completed by the cooperation of the protection circuit board and PTC or TCO and other current devices.

Voltage protection: overcharge, overdischarge, this should be changed according to the different materials of the battery, this seems simple, but to see the details, or experience learning.