1S 4.2V 3S 12.6V 4S 16.8V Lithium Battery Li-po Li-ion Capacity Indicator Board Power Display Charging Charge LED Tester

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1S 4.2V 3S 12.6V 4S 16.8V Lithium Battery Li-po Li-ion Capacity Indicator Board Power Display Charging Charge LED Tester
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