Features Quality Assurance: Alloy resistance, stable resistance, high temperature resistance, small size, stable performance. Wide Range of Application: Lithium battery protection board is suitable for massager battery pack, LED light backup power supply, 12V electronic products, solar street light battery pack, monitoring backup power supply, etc. Main Functions: BMS protection PCB board has short circuit protection, overcurrent protection, overcharge protection, overdischarge protection, and it can be recovered by itself after delay. Voltage and Current: The overcharge voltage range is 3.75±0.05V, the overdischarge voltage range is 2.1±0.05V, the upper limit working current is 12A, and the upper limit instantaneous current can reach 17A. Note: LiFePO4 batteries cannot be used for lithium battery protection boards, xenon lamps, electric drill battery packs, battery packs for electric fish machines, battery packs for electric bicycles, children's battery cars, power motors above 550, 1W fisheye LED lights. Specification: Item Type: Battery Protection Board Upper Limit Working Current: 12A Upper Limit Instantaneous Current: 17A Overcharge Voltage Range: 3.75±0.05V Over-Discharge Voltage Range: 2.1±0.05V Quiescent Current: Less Than 30μA Charging Voltage: 3.2V  Package List:  3 x Battery Protection Board Package List 3 x Battery Protection Board