Compact and efficient 2S lithium battery charging module with Type-C connector. Supports 18650 and 21700 cells with 2A fast charging and 16.8V step-up output. Built-in protection against overvoltage, automatic recharge cycling, and quasi-CV compensation ensures safe operation. Ideal for portable power banks, DIY battery projects, and modern USB-C charging systems. Input: DC 3-6V | Output: 8.4V at 1.1A.
