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5pcs CD42 DC 5V 2.1A Mobile Power Diy Board 3.7V/4.2V Charge Discharge Boost Battery Protection Indicator ModuleLithium 18650

USD 3.95USD 5.57

5pcs CD42 DC 5V 2.1A Mobile Power Diy Board 3.7V/4.2V Charge Discharge Boost Battery Protection Indicator ModuleLithium 18650

Description
Specification
1PCS TDA7000 7000 DIP
USD 4.34USD 4.57
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