ITEM NAME:1 pc Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board Cell Nice Descriptio n Description: Module name: 3S 12.6V Li-ion Lithium Battery 18650 Charger Protection PCB Board Suitable range: For nominal voltage 3.6V 3.7V lithium battery(Including 18650,26650, lithium polymer batteries) Product size: 59*20*3.4mm Charging voltage: 12.6V Maximum output current: 20A Maximum output power / charging power: 252W Precautions: 1.Strictly according to the diagram wiring: 0V/4.2V/8.4V/12.6V,Otherwise it will cause damage to the chip. 2.After connection,it need to first charge activation, then will have the output. Notes: Do not mix the good battery and poor battery to use.The internal resistance of 3 battery capacity are closer will be better.Please buyers know the professional knowledge of this module before buying Specifications: Color: As Pictures Show Size: As Pictures Show Package Included: 1 *Â 3S 20A Lithium Battery Protection Board Note: 1.Due to the manual measurement and different measurement methods, the actual size could be slightly different. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. Whatever the ending's perfect or not, you can't disappear from my world 1 pc Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board Cell Nice.Maximum output power / charging power: 252W. We'd like to settle any problem in a friendly manner. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted.