With tenary chemistries, you want to keep them as close to 50% as practical, and I'd say at least 3-4 times a year go to 100%, but don't keep it there for more than a few hours. (Like take it there right before you leave for a road trip) That lets the BMS do its top balance, which is needed.
I keep my 2018 Tesla Model 3 charged to no higher than 70% for daily use, unless I know I'll need it. It's got enough range at 70% to more than cover my needs. I have not had appreciable degradation. Teslas will use a lot of power if you leave sentry mode running, but without that, it should sleep and not use much range. Sentry keeps the contactors closed 24/7 and sucks down about 200W. On Sat, Aug 24, 2024 at 1:41 PM Ken Olum via EV <ev@lists.evdl.org> wrote: > Interesting. What if you have NCA batteries, which seem to be what is > in older Teslas? > > I guess I've been doing the wrong thing, because I've never charged to > 100%. It doesn't give any more range than 98%, unless you always start > by driving on the highway or up a hill, because you don't get regen. > > A good reason to leave Teslas plugged in is that they use a lot of > energy when you're not driving. Maybe the equivalent of two miles in 24 > hours. So if you leave your Tesla unplugged for too long you may have > an unpleasant surprise. (In my case, even though the car is plugged in > it drains the battery for this idle draw, then recharges it every couple > days. That does not seem right to me.) > > Ken > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20240824/622fe6ed/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
