But whether you "need to lose 10% over two years" - that is definitely the big question! I haven’t seen a ton of evidence that specific optimal treatment of the battery is strongly correlated to capacity loss for Tesla vehicles (even though it should be!), but sticking to proven best practices for Li-ion batteries can’t hurt, and probably does help in general. Certainly there are a couple examples here of people using the lower SOC and having good results. But overall trends? I have no idea. It seems like there are plenty of examples of people with ~70% SOC habits with low depth of discharge daily charging, which you’d think would be pretty healthy, who see ~10% capacity loss after a couple years. And others with similar habits who are doing noticeably better.
I agree with this. After 3 yrs and reading all the posts regarding the HV battery. It looks more like a battery lottery on how good the cells are in one‘s pack…than how they are treated/charged. I’ve given up and decided a long time ago to just charge to 90%. Why? Because I want the the maximum amount of power available. I think it’s too slow when the battery gets in the lower SOC lol. I dont think much about it other than stay under 90%, unless going on a long trip and stay above 20%. I plan on getting rid of it after 5-8 yrs and the HV battery will be under warranty during that time. Why not just charge up to 90 and enjoy it?