1. AC input switching power supply hi-tech application and lightweight
2. Suitable for Ni-Cd and Ni-MH battery both use
3. Built-in DC cooling fan
4. 10 bits microprocessor controller to increase battery's lifespan
5. Selectable charge rate AC/DC 4-8 cell 1,2,4amp
6. Output has reverse polarity and short circuit protection
7. With LED light and beeper to indicate the charging status
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