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4S 16.8V 8A Li-ion Protection Board for Power Drill Tool Li-ion *vv

4S 16.8V 8A Li-ion Protection Board for Power Drill Tool Li-ion *vy

4S 16.8V 40A BMS 18650 Li-ion Charger Protection Board For Drill Motor #cv

4S 16.8V 8A Li-ion Protection Board for Power Drill Tool Li-ion *mq

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4S 16.8V 30A 18650 Li-ion Protection Board BMS Dual MOS for Power Tools #am