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