Originally Posted by d design
Lifepo4 dont need bms at the C rate we use them at.
The BMS has nothing to do with "C" rate but has lots to do with protecting against over discharge and over charge of the cells which can ruin them.
You may not ever need to use a battery management system to balance,
if staying well within the knee range, but you really should have low and high voltage protection or risk a big fat hole in your wallet.. A LA battery can survive over charging
and over discharging but a LiFePO4 will usually be irreversibly damaged if pushed too far.
The most beneficial part of any BMS is protecting against an HVE and LVE, not cell balancing, but people get confused and assume a BMS is all about cell balancing, it is not. For people who insist on using LA charge voltages on LiFePO4, then you really will want cell balancing. Charge to a max of 14.0V, and never go below 20% SOC, and you will likely need to top balance less than you equalize flooded batts. Push these cells over 14.2V on a regular basis and you will require more frequent balancing.