Quote:
Originally Posted by calgarygeologist
What sort of impact does supercharging or short charging have on battery longevity? Battery degradation seems to be a concern although I'm not certain if there is enough real world data yet for establishing optimal charging parameters and obviously every vehicle is different in terms of thermal management systems.
|
Basically every study or article I've seen shows that fast DC charging causes more degradation but even for EVs that only use DC charging the increased degradation isn't much worse than normal degradation. Basically battery degradation isn't worth worrying about if you avoid the extremes of charging.
For example it is best to avoid charging the battery in extreme heat, or constantly letting it go below 10%. We looked at renting a M3 from Turo and one guy asked that his car not be charged to 100% at a DC charger. This is a bit ridiculous in my opinion but there is the belief on many forums that constantly charging to 100% causes increased degradation. I set my charger to only go to 90% for this reason but if I ever am going on a long trip I will charge it to 100% or close as needed. The better reason to avoid fast charging above 80% is its just slower no matter what EV and at paid chargers you are paying for time not actual kW delivered.