Yeah, Sadly the quality of packs before about VIN 60k on Model S was spotty. That shouldn't happen, but seems to on those older packs. Doing the periodic balance may help avert that.
Did you get any alerts, such as BMS_u029_dSoc_Limiting or BMS_u018_SOC_Imbalance_Limiting? On Mon, Jan 15, 2024 at 6:17 AM Willie via EV <ev@lists.evdl.org> wrote: > > On 1/14/24 20:39, (-Phil-) via EV wrote: > > Yeah, My procedure is to charge to 75% overnight normally, or higher if > > needed. 3-4 times a year I need to take a road trip, so I charge to 90% > > overnight, then 2 hours before I am about to leave, I'll take it to 100% > to > > give it time to balance. (I have ternary/NMC not LFP) The pack > doesn't > > sit too long at 100% when you hit the highway. > > > > You really don't need to worry too much about balance unless you see a > drop > > in range, then do a balance, and if you get some range back after a week > or > > so, do it again and ad nauseum until you don't see any gain. I think > > doing it a few times a year does a pretty good job of keeping it > in-check, > > but all packs are different, so YMMV. > > I recently pulled my 2013 S85 (~170k miles) back from being loaned out. > The person using it rarely took longish trips and tried to keep it > charged daily to 90%. Probably above 50% most of the time. That is how > it was treated for a couple of years. It was about 150 miles distant > from my home; the trip home had several SuperCharging opportunities but > I decided the extra charging would not be needed. About 15 miles from > home, with estimated remaining range of 29 miles, the car abruptly ran > out of energy. I ran the 12 v down while messing around trying to tow > it home with a rope. Eventually, I got it flat bed towed (expensive 15 > miles). Eventually got the 12v going and charged up the traction > battery. Everything worked semi-well. With some trepidation, I tested > the range estimate by driving ~8 mile circles around my house. I got it > down to zero. Indicating that the range estimate was again semi-accurate. > > Incidentally, Tesla replaced several lead batteries approximately > annually. When Tesla started demanding payment for 12v replacement, I > put a LFP in. That 12v has been trouble free for about 5 years. > > _______________________________________________ > 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/20240115/9863fb44/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
