ITEM NAME:Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board Cell Module #gib Product Description Description: Features: It is suitable for electric drill / sprayer /LED lamp / low power inverter. 4S 16.8V 40A Lithium Battery Protection Board (Automatic Recovery with Recovery Function) Scope of application: rated voltage 3.6V, 3.7V lithium battery (containing 18650 26650, polymer lithium battery) Specifications: Charging Voltage: 16.8V-18.1V Continuous discharge current (upper limit): 40A (if cooling environment is not good, please reduce the use of load current) Continuous charging current (upper limit): 20A Material: ABS Board size: 46*60*3.4mm/1.81*2.36*0.13" Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow slight measuring deviation due to manual measurement. Included: 1 X Protection Board.4S 16.8V 40A Lithium Battery Protection Board (Automatic Recovery with Recovery Function). Included: 1 X Protection Board. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures.