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30pcs 3.7v 1 string PCB 4A discharge Balance IC Protection Board Welding Nickel Sheet DIY 4.2v 18650 21700 Lithium Battery pack

USD 65.25USD 75.00

30pcs 3.7v 1 string PCB 4A discharge Balance IC Protection Board Welding Nickel Sheet DIY 4.2v 18650 21700 Lithium Battery pack

Description
Specification
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