16.8V DIY 4S BMS PCB Board Power Wall 18650 Battery Pack Holder Box No Soldering

16.8V DIY 4S BMS PCB Board Power Wall 18650 Holder Box Module Case No Soldering. There is a 15A fuse on each circuit board, if there is a problem with the battery, it will not affect other batteries. The battery direction of all battery boxes is subject to the PCB board.

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