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DC 5V 2.1A Mobile Power Diy Board 4.2V Charge / Discharge(boost) battery protection indicator module 3.7V lithium 18650

USD 1.82USD 2.00

DC 5V 2.1A Mobile Power Diy Board 4.2V Charge / Discharge(boost) battery protection indicator module 3.7V lithium 18650

Description
Specification
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