My SOH has changed. But in the same time, it has NOT!
60,000 km service today. Went to the same KIA-authorized workshop as last time, and expected to find an SOH value of around 99.3% (matching Det 11.4/9.9) on the battery report.
When the car was ready, the battery report from KDS showed this:
Code: Select all
SOH (State of Health): 100.0 %
Accumulative Charge Current: 0.1 Ah
Accumulative Discharge Current: 0.6 Ah
Accumulative Charge Power: 0.0 kWh
Accumulative Discharge Power: 0.2 kWh
Accumulative Operating Time: 675 Sec
It seems that they have managed in some way to reset the BMS and clear all the history counters, probably not knowing what would happen (and still did it..)
My deterioration data is also cleared: MaxDet: 0.0, MaxCell: 0, MinDet: 0.0, MinCell 0
The BMS is in a virgin state, as if it was brand new... but the battery is the same, with 61000 km in it.
Seeing that this actually is possible, one should be careful when buying a used Soul EV from a dealer (or anyone). And what about warranty claims? Would an actual battery test be done, or just reading the SOH value.. A complete reset like this should be quite easy to discover though: There must be reasonable values on the energy and time counters compared with the odometer.
I expect my deterioration numbers to start showing values again soon - maybe tomorrow, as the c harger goes from 16% to 90%+ tonight.