ironmanco wrote:lorenfb wrote:I've never stated nor implied that I had any actual data. I've always argued that actual Leaf battery cell characteristics/data were lacking to conclude or recommend any optimum charging mode.
Maybe not "optimum" but I think there is PLENTY of data and experience to recommend best practices for charging. Are we really shooting for the optimum or at least some basic methodology better than willly-nilly charging?
Agreed. My approach for the last 4 years is to always charge to 100% the previous early morning where the Leaf will be driven
within a few hours and limit the remaining Ahrs to about 18. I never QC to 100%. Typical charging times are about 10-12 minutes.
When not being used, the battery is left at 40% or less. Given the limited range of my 24kWh Leaf, any other charging approach would
be impractical. It's presently at 54K, 51 Ahrs, and one lost bar. Even on hot days (100F) here in SoCal, the battery has never exceeded
100-110F per LeafSpy/LeafDD.
The key point of this thread ideally would be to choose a practical charging mode for a desired range/battery life. Assuming a typical driving
case of 5 days a week with a daily full charge, that results in about 250 cycles per year. Using the typical capacity loss per battery cycle
one finds that the worst case degradation per that data after about tens years (2500 cycles) is only about 15%. Others factors, e.g. heat,
dominate and result in significantly more degradation over that time period.