10Pcs 1S 3.7V BMS 18650 Charger 4A PCB Protection Board for Li-Ion Lithium Batte
10x 1S BMS Lithium Battery Protection Board. 1S BMS Protection Board. Max Working Current: 4A. Short Circuit Protection: Protectable, Delayed Self-Recovery. Internal Resistance: MOSPET less than 40m ohm.