Features 1、Boost Voltage Charging: This is a boost voltage battery charging module, can input 3‑6V voltage through Type C, and output 8.4V charging voltage. 2、Automatic Charging: The module can automatically charge the internal resistance and leakage resistance of the battery 3、Good Protection: This module has battery short circuit protection and over voltage protection, safe and reliable to use. 4、Precise PCB Board: The battery charger board adopts precise wiring and welding board, provides stable and performance and good durability. 5、Good Adaptability: The module has strong adaptability for input power supply, can easily connect to the battery, small in size, convenient to carry. Specification Item Type: Battery Charger Module Material: PCB 2 Cell(2S) 8.4V Version: Input Voltage: DC 3-6V (recommended DC 3.7V 5V) Charging Voltage : 8.4V Package List 1 x Battery Charger Module