DIY 12V 3S7P Rechargeable Battery Pack Box with 40A BMS + UK Charger + Holder

1 12V 3S7P Battery Box. 3S40A BMS：. 1 3S40A BMS. 12V 3S 7P Li-ion Battery BOX. 1.18650 Li Battery Nickel Strip Plate Belt Connector SheetUsed for battery connection sheet, lead-out sheet. 18650 AA Battery 4 welding Nickel：.

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