Lithium Battery Charger Protection Module (BMS) 1S 4A 4.2V

From the shop's description

The Lithium battery protection board is a small size board that provides protection against short-circuit, overcharge and overdischarge. Features Connecting Charger Teminal adopts withstand high voltage instrument Overcharge , Over-Discharge, Short Circuit MOS tube can control battery charging and discharging Wide Operating Temperature Range Low Consumption Current Specifications: This section discusses some of the important features and specifications of the lithium battery protection board. Overcharge detection voltage: 4.25 +/- 0.05V Overcharge release voltage: 4.23 +/- 0.05V Over discharge detection voltage: 2.45 +/- 0.1V Upper limit continuous current: 4A Overcurrent detection current: 5A Charging voltage: 4.2V Over-charge and Over-discharge protection Pin Configuration The Li-Ion protection board is a simple module with basic input and output pins. The table below shows all the pin types and their functions. B+:connect with power positive B-:connect with power negative P+:connect with charging/discharging port positive(charging port/discharging port common used) P-:connect with charging/discharging port negative(charging port/discharging port common used)