how do you make sure your absolute and relative SOCs (State of Charge) are correct?. The documentation says how to calibrate voltages, currents, temperatures, but does not say anything about how to make sure the State of Charge computation is right.
Talking about the same pack (8s6p of 26650 cells). This is a 13.8Ah pack. When I tell the EVM board the right .chem (for A123 26650) and right .tmap (with 6 parallel cells). I can see that the design capacity is 4800mAh, and the remaining capacity is some value totally off of what the pack remaining capacity actually is. Then it computes the absolute SOC as the ratio of remaining cap/ design cap, which is totally wrong for my pack because I start with it fully charged. So how to make sure the SOCs coming from the EVM are correct?.
I am not saying the EVM board should know this SOCs and parameters from a cold start, maybe not, but at least would be useful to know how to set them to the right values...or a procedure to calibrate those values... maybe I am missing something.
(BTW, my EVM board has had a communication error and now it doesn't turn on again. It was discharging at -7A for like 30min and then failed, and doesn't recover.safety was not inhibit, and current was within limits, so don;t know why it failed)
Thanks
