batteries - protection modules

 

Li-Ion batteries have become safer to use over the past years and don't show safety issues anymore, but almost all manufacturers require an additional protection measure. This is usually achieved by adding a small PCB assembly which provides the following protective functions:

overcurrent/short circuit

overcharge (battery will be cut off from charger if voltage exceeds certain levels)

overdischarge (battery will be cut off from load if voltage drops below a certain level)

optional overtemperature
protection module pdf file