3S USB Type-C to 12.6V Li-ion Battery Charger Module - Step Up Boost Charging Board for DIY Electronics, RC Drones, and Portable Devices | Fast Charging & Overcharge Protection

3-Cell(3S) 12.6V Version: Input voltage: DC 3-6V (recommended DC 5V) Input current: 4A Output voltage: 12.6V Output current: 1.48A 4-Cell(4S) 16.8V version: Input voltage: DC 3-6V (recommended DC 5V) Input current: 4A Charging voltage: 16.8V Charging current: 1.12A