EvanstonI3 wrote: ↑
Sun Mar 28, 2021 1:35 pm
That is true about his question but I foresaw where he was going with it.
If I am wrong, what is it I am wrong about? Seriously.
You're wrong to get so triggered when somebody asks this question. It's not just you. I see nearly violent reactions on Reddit and Facebook i3 groups as well. I don't get why somebody's desire to charge to 80% is so personally offensive. Just because the meme says "ABC" doesn't make it the rule.
You're wrong about the 10%. Yes, there's a top buffer, but it's closer to 5%, with a fatter buffer at the bottom where greater damage can be done. And 95% or even 90% is not 80%
You're wrong about the BMS. Not in that the i3 has BMS -- of course it does, as sure as my windows have panes of glass. You write "there is a battery management system..." as if other car's don't, or implying BMW's is somehow superior, leading it to my next point...
...being that there is much advice from major players to limit charging to 80% when the extra capacity is not needed. Tesla (who I expect has the most advanced BMS, and definitely has a better battery cooling system) suggests this, as do Kia and now VW. I'll give you that the 80% seems somewhat arbitrary with the lack of much hard data, so maybe on the cautious side, but that's the guessing game we're left playing.
I, as a possible i3 long-hauler but definitely somebody who wants to keep their battery in great shape, have no issue following what amounts to loosely agreed "industry best practices" even if BMW has opted to take the "don't worry your pretty lil' head" approach so as not to make EVs seem complicated. But I have the luxury of living within this self-imposed capacity / range reduction, L1 charging works for my daily needs, and without hesitation I would daily charge to 100% on L2 or even DC if that's what I needed to get around (though I wouldn't have picked this car).
So my questions to you are:
1. What do you find personally insulting if somebody wants to limit their charging to 80%?
2. What data do you have to be so certain the 80% recommendations are wrong and the "always be charging" mentality has no consequences, even if minimal? Hopefully more than a meme from