SageBrush wrote:I don't know what you would accept as proof, but Nissan telling me to avoid 100% charges if I want to prolong battery life is good enough for me, even if I didn't know about a mountain of information that shows that minimizing SOC deviation from 50% decreases battery aging. Admittedly this is a lot more true for NiMH than Li-X, but it still holds true for Lithium as e.g. Toyota's handling of the SOC range in their plug-ins demonstrate. Toyota wants the AER range to maintain through 150k miles so they baby the SOC.rcm4453 wrote:Besides, what proof is there that charging to 100% all the time has really degraded the battery any faster?
A different question could be: how long do you want the battery to last, and what aging rate are you happy with ?
Well Nissan never told me anything like that when I leased my Leaf. The average consumer is NOT going to bother with charge timers anyway, they will charge it like they charge their cell phones and not worry about it. Like I said if it mattered that much then why was there still lots of degradation with the people who didn't charge to 100% often? The question is why doesn't Nissan figure out a way to allow an 80% charge option if charging to 100% isn't good? You'd think it would be in their best interest to avoid degradation warranty claims. I'm thinking it's because they figured out that charging to 100% has very little to do with premature degradation. As for me personally, it's not worth the hassle, it's a car not an ongoing science project so I just charge it and drive it! If the battery degrades like crazy it will be the next guy's problem which is why I chose to lease.