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> >> Controlling the charge to less than 100% state-of-charge also helps push the longevity. > Um, that is cheating. Running any battery at less than capacity
by miketery 7y ago
> >> Controlling the charge to less than 100% state-of-charge also helps push the longevity.
> Um, that is cheating. Running any battery at less than capacity will extend its life. You could put two batteries in the car, run them at 50% or alternate between them, and get double the life. No prizes for that.
I imagine the idea is that by going to X% instead of 100% fill, you extend by more than 1/X. So at 95%, perhaps we gain 20% life instead of the expected, 1/.95 ~= 1.05 -> extra 5% life.
- manmal 7y agoExactly. And this practice is widely followed by basically every BEV car manufacturer. Most of the more recent models even have a bigger battery than specified, and charge only up to 90-95% capacity while providing the specified range.