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

30pcs 3.7v 1 string PCB 4A discharge Balance IC Protection Board Welding Nickel Sheet DIY 4.2v 18650 21700 Lithium Battery pack
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sku: 1005004436539833
$64.50+1%
$65.25
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