Lithium Phosphate Battery Charger Protection Module (BMS) 4S 20A 12.8V With Thermal Protection

From the shop's description

Features: High-accuracy voltage detection circuit Terminal of the charger using high voltage device Thermal Protection Can control the battery charge and over-discharge Low standby current consumption Small size Simple writing, circuit connection, and installation Specifications: Overcharge voltage range: 3.65 ± 0.05V Over discharge voltage range: 2.35 ± 0.05V Rated voltage: 12.8V Full charge charging voltage: 14.4V Charging voltage: 12.8-14.8V Upper limit working current: 10A Upper limit instantaneous current: 20A Quiescent current: <30µA Internal resistance: 45mΩ Operating temperature range: -50℃ to +50℃ Storage temperature range: -50℃ to +80℃ PCB Board Size: 64mmx43mm Note:- This BMS is not Used for Lithium-Ion Battey 3.7v. It can be used only LFP 3.2V batteries BMS Solder Instruction: B+: connected battery positive B1: connect point between battery 1 and battery 2 B2: connect the point between battery 2 and battery 3 B3: connect the point between battery 3 and battery 4 B-: connect to battery negative P+: connection charge / discharge positive P-: connection charge / discharge negative