1. Switching power supply technology in AC input.
2. 10 bits microchip controller provides efficient and precise charge
3. Voltage booster 14.8V DC that can charge a 4-cell Li battery pack
4. Selectable charge rate 500mA, 1000mA and 2000mA
5. Automatically detects cell count and selects errors
6. With LED light and beeper to indicate the charging status
7. Short circuit protection for input and output
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