Voltage Converter -TP5100 Single 4.2V / Dual 8.4V2A Battery Charging Module Overcharge Protection Highlights Generic Brand TP5100 Single 4.2V / Dual 8.4V2A Battery Charging Module Overcharge Protection Description: Input voltage: 5-12V DC power supply Charging status: blue light full and no load, red while charging Voltage adjustment should be used in working status. When the switch is installed, the input must be disconnected and then switched. It can also be used for constant current white LEDs: set a single lithium unit, set a 2 string lithium dual unit. Suitable for portable devices, various chargers, smart phones, tablets, power tools, walkie-talkies, etc. Specification: Material: Plastic Size: 2.5x1.7cm Static Input Power (VIN): 20V BAT: -8.4V~20V Short Circuit Duration BAT: Continuous Maximum Junction Temperature: 120C Working Temperature: - 40C~85C Storage Temperature: -65C~125C Package Include: 1 Piece Charge Controller Module