10x 1S 3.7V 3A Li-ion Lithium LiPo BMS Protection PCB Board 18650 Charger Module Description: Overcharge Detection Voltage: 4.25 ± 0.05V Overcharge Release Voltage: 4.23 ± 0.05V Over Discharge Detection Voltage: 2.45 ± 0.1V Maximal Continuous Charging Current: 2A Maximal Continuous Discharging Current: 2A Over Current Protection: 3A Charging Voltage: 3.7V Product Size: 30 x 4mm / 1.18 x 0.15inch (L x W) Protection: Overcharge Protection; Overdischarge Protection; Short Circuit Protection; Overcurrent Protection. Wiring Instructions: B+ : Connected to the battery positive. B- : Connected battery negative. P+ : for the battery pack output input positive P- : for the battery pack output input negative