BMS 4S 40A Lithium Battery Charging Controller, 3.7V / 12V / 14.8V / 16.8V

New BMS. Price for 1 unit. 5 units available. Protection for 4 series-connected 3.7V lithium cells. Compatible with nominal voltage batteries of 3.6V, 3.7V (e.g., 18650, 26650, others). Suitable for batteries used in screwdrivers, drills, power drills, etc., supporting peak currents up to 80A. Features: Charging voltage: 16.8V–18.1V Continuous discharge current: 40A Maximum charging current: 20A Dimensions: approx. 45×55×3.4 mm I ship orders