MCP73831 charger with 200mA* charging current USB-C connector for power 2 pin JST-PH connector for plugging in a LiPo/LiIon battery Charge LED XB6096I2S battery protector (datasheet) (Pro only) Additional 2 pin JST-PH connector for powering an up to 4.2V tolerant device** (Pro only) Power on/off button and associated LED (Pro only) Comes fully assembled.