I am wondering if there is a common best practice to determine the SOH trend of my car. I think I understand the basic math (as described at Tesla battery degradation and health), also I have Teslafi which provides the famous Battery Report. However in my understanding the result of the battery report is impacted by "temporary" factors like BMS Calibration and cell imbalance, not just the actual battery degradation.
What might be the best practice to minimize the impact of the temporary factors on the SOH calculation? I don't necessarily want to see exact results, just to see a long term trend of real battery degradation.
(in my current example for my 2018 MS100 Teslafi showed that battery range always moving around 470km, then 1-2 weeks ago it dropped to 465km, and now it consistently moves around 465km. I am wondering if this is real degradation, or cell imbalance/BMS calibration issue. Reading through quite a lot of discussion on TMC in related topics, my understanding is that there is no universally acknowledged step-by-step method to rebalance/recalibrate)
E.g. is it possible to check cell imbalance without SMT? Maybe in the service menu?
What might be the best practice to minimize the impact of the temporary factors on the SOH calculation? I don't necessarily want to see exact results, just to see a long term trend of real battery degradation.
(in my current example for my 2018 MS100 Teslafi showed that battery range always moving around 470km, then 1-2 weeks ago it dropped to 465km, and now it consistently moves around 465km. I am wondering if this is real degradation, or cell imbalance/BMS calibration issue. Reading through quite a lot of discussion on TMC in related topics, my understanding is that there is no universally acknowledged step-by-step method to rebalance/recalibrate)
E.g. is it possible to check cell imbalance without SMT? Maybe in the service menu?