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<< KEY FEATURES >>
✅ Compatible with one 18650, 21700 or 26650 rechargeable Li-ion battery;
✅ Supports USB Type-C charging and USB discharging (use as power bank);
✅ LED charging/discharging indicator;
✅ LED battery power detection;
✅ Short circuit, over-current, over-voltage, over-charging and reverse polarity protection;
✅ Microcomputer chip controlled, digitally regulated charging to extend battery lifetime.
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