From EV road trips.

The vehicle owner visited two authorized service centers and was told that according to the official KDS diagnostics everything was fine — even though the measured values made no physical sense. We therefore decided to perform an independent test: a driving test with zero regeneration, monitoring individual cell voltages under load, followed by a charging test from 3% to 100%.

⏱ Chapters
0:00 – Introduction: heading out to test the EV6 GT
0:23 – Problem with service diagnostics (KDS)
0:57 – Why a 1 V difference between cells makes no sense
1:43 – Explanation of cell configuration (2P / 3P)
1:56 – Start of the driving test Košice → Poprad
2:10 – SOH, capacity and first data from Car Scanner
2:28 – Behavior of cell 169 under load
2:54 – Zero regeneration test (important note)
3:02 – Arrival with 3% SOC – critical phase
3:17 – Charging test from 3% to 100%
3:29 – Real charged energy vs. vehicle data
3:44 – Cell graphs and final evaluation
4:04 – Conclusion: why you shouldn’t blindly trust onboard data

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