Description
The 4S 4A Lithium Battery Charger is a compact and efficient charging module designed for recharging 4-cell (4S) lithium battery packs. With a Type-C input interface, it provides convenient and reliable charging from computers, wall adapters, or power banks. This charger is ideal for 18650-based battery packs, DIY power banks, and portable electronic devices.
Key Features
- Input Voltage: DC 3 – 6 V (recommended 3.7 – 5 V)
- Charging Voltage: 16.8 V DC
- Input Current: 4 A
- Charging Current: 1.12 A
- Switching Frequency: Up to 1 MHz for efficient power conversion
- Quasi-Constant Voltage (CV) Mode: Compensates for voltage drops due to internal or wiring resistance
- Automatic Recharge Protection: Restarts charging when voltage falls below safe levels or during short-circuit recovery
- Over-Voltage Protection: Safeguards the battery from excessive charging voltage
- Wide Input Compatibility: Works with power sources that have limited current output
- LED Indicators:
- CR LED: Charging in progress
-
OK LED: Battery fully charged or in constant-voltage mode
Specification
- Input Voltage: 3 – 6 V DC
- Output Voltage: 16.8 V DC
- Input Current: 4 A
- Charging Current: 1.12 A
- Operating Temperature: −40 °C to +85 °C
- Dimensions: 39 mm × 18 mm × 6.3 mm
- Weight: 5 g
Application
- Portable electronic devices (MP3, MP4 players, PDAs, cameras)
- Bluetooth gadgets and handheld game consoles
- 18650 lithium-ion battery packs
- Laptops and mobile devices
- Solar-powered charging systems
- DIY battery projects and power banks
- Audio equipment and POS systems
- Mini fans and Type-C-powered devices