Proper fuse for 12V325Ah Mini


  • I have the 12volt 314Ah Mini (not smart) battery. Per the specifications, the max continuous discharge current is 200A, but if I understand correctly, the BMS has over-current discharge protection of 600+\-50Amps.  I plan on installing a 3000W 12V inverter.

    If I calculated correctly, the inverter could draw a max current of 3000/12=250A.  Plan on connecting the inverter with 4/0 awg copper wire, about 4 feet.

    what size fuse should I use?  I was planning on a 400A fuse at the battery terminal, but could that damage the battery by exceeding the max discharge rate of 200A.  Not sure why the BMS over-current protection is set at 600A.

    Im new at this and appreciate any help and insight.



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