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20pcs 3.7v 1 string PCB 4A discharge IC Protection Board Welding Nickel Sheet DIY 4.2v 18650 21700 26650 Lithium Battery pack

USD 46.98USD 54.00

20pcs 3.7v 1 string PCB 4A discharge IC Protection Board Welding Nickel Sheet DIY 4.2v 18650 21700 26650 Lithium Battery pack

Description
Specification
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