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Multiform

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    Multiform reacted to P1000 in Mecer LiFePO4 Lithium Ion Batteries: Any experience   
    BMS does not "limit" charging current. It disconnects the charging FET completely for at least a while when it reaches the limit, but I don't think that is what is happening here. I suspect you are hitting cell over voltage protection - one of the cells voltage is going too high, and the charging FET disconnects. Basically your cells are out of balance so far that the BMS cannot fix it with your charger.
    I would drop the bulk current to 1A and every time you see it going haywire, discharge the battery for 10 minutes and repeat.

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