4 cell LiFePO4 battery protection circuit

Features:

High-accuracy voltage detection circuit

Overcharge detection voltage 3.9V Accuracy ±25 mV

Overcharge release voltage 3.5V Accuracy ±50 mV

Cell-balance detection voltage 3.55V Accuracy ±25 mV

Overdischarge detection voltage 2.5V Accuracy ±50 mV

Overdischarge release voltage 2.7V Accuracy ±100 mV

Wide range of operation temperature Ta = −40°C to +85°C Low current consumption 7.0 μA max. Dimensions are 67 x 38mm.

It is a hard-to-find protection circuit that is truly appropriate for LiFePO4 batteries. And it is unique with its charge and also discharge balancing function.