kamusial

I would recommend that you spend few hours/days in balancing mode to remove the imbalance. To achieve that yourself you can skip battery balancing and swap Deye into V-control. If you can have a look into BMS and you should be able see if/when cells are balancing. Set minimum voltage which keeps balancing. After the process return to normal CAN control

54.2V is perhaps stationary reading. Per manual these units should achieve 57.2V and then relax. If they do not, they may have cell overvoltage protection triggering stop of charge.

What imbalance means is that out of 16 cells, one cell(s) will have high voltage reading, while other(s) has low. 180mV would mean that one cell is at 3600mV (overvoltage alert zone, 100% charge) while other is at 3420mV (~98% charge). In long time this causes the high voltage cells to degrade faster than the low voltage cells limiting the useful capacity of the untis.