3S 4A 12.6V Lithium Battery Charger Module | USB Type-C to 12.6V Boost Converter for 18650 Li-Ion LiPo Batteries

�� Supports 3S Li-Ion / LiPo Battery Packs (12.6V charging output) ⚡ Input Voltage: DC 3V to 6V (recommended 3.7V–5V) �� USB Type-C Input Port for convenient and universal charging �� High-Efficiency Boost Converter with switching frequency up to 1MHz �� Quasi-CV Mode: Compensates for battery and trace resistance �� Automatic Recharge when battery voltage drops �� Built-in Protection: Over-voltage, short battery, and low-voltage input �� LED Indicators: “CR” for Charging, “OK” for Fully Charged or Constant Voltage Mode ��️ Wide Operating Temp: -40℃ to 85℃ ��️ Compact Size: 39mm x 18mm x 6.3mm — ideal for tight DIY spaces ⚖️ Lightweight: Only 5g — perfect for portable use