houseofancients
Solar Wizard
no entirely true, some bms'es do limit the charging or dicharging current based on SOC ..I didn't address this.
The BMS don't regulate anything. They are simply observers and drawbridge operators with a different bridge for each direction of traffic. They watch for things to go out of limits. When it does, they raise the drawbridge prohibiting the traffic in the offending direction.
The BMS in no way influence how much any battery discharges or charges beyond cutting it off if it's too much.
Seplos is one of those, and given the diode issue, iḿ convinced they are.
@OP , when you are there , any change to disconnect some batteries to manually bring up to the same SOC , or as close as possible ?
since you have breakers, this could be done by switching one off everytime untill the battery is let's say 85% , enabling the next one, shutting down the breaker for the one that is 85% , or a similar process ?
next to that, the seplos bms calculates the SOC based on a full charge and discharge cycle, which means the battery has to charged too 100% and Discharged to 100% ( both shutoff) , and those numbers are used to calculate the SOC..
i am not sure rosen actually did that prior to shipping, but given you have replaced the BMS's , i would expect them to not be using the correct SOC numbers
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