ITEM NAME:12.6V Lithium Battery 18650 Charger PCB BMS Protection Charging Board w/Balance Product Description Description: Specification: Product model: HW-287 Charging Voltage: DC 12.6V-13.6V Continuous discharge current: maximum 40A (if heat dissipation environment is not good, please reduce the use of load current) Continuous charging current: maximum 20A Applicable Choice: For lithium batteries with nominal voltage of 3.7V and full charge of 4.2V (including 18650, 26650 and polymer lithium batteries), with electric drill below 170W. Product size: 60mm*40mm*2mm/2.36*1.57*0.07'' Packing weight: 12g Warm Tips: 1. Successful start-up of the drill requires three 10℃-20℃ power batteries or six 5℃-10℃ power batteries (recommended power battery models: for SONY VTC4, VTC4A, VTC5A, VTC6), 0 V and 12.6V connections, using copper wires over 3 square millimeters (no nickel sheets). 2. Strict wiring 0V, 4.2V, 8.4V, 12.6V. When welding wire, no element on board can be touched. Note: Please allow 1-3cm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understand. Included: 1 X Li-ion Battery Charger Protection Board.Continuous charging current: maximum 20A. Strict wiring 0V, 4.2V, 8.4V, 12.6V. Due to the different display and different light, the picture may not show the actual color of the item. 12 months Warranty.