Yes, that only applies to full power supercharging on Ternary (NMC). If you don't preheat (use the nav) a Tesla can still supercharge, but if not that hot you will get lower peak power as well as a faster taper. This is why Tesla has integrated supercharging into the navigation system, so it will begin pre-heating the pack before you arrive at the next station. Having the pack at these temperatures reduces the possibility of anode plating, so it's important if you want a long life with good charging speeds. Most of Tesla's packs can now charge at well over 3C with no plating because of this tight thermal control. I don't know what the temp curves look like for LFP, I haven't analyzed one yet.
The pack will not need to preheat like this for normal level 2 speeds. The Leaf thermal management system sucks. I had one of the original 2011 models when they were first introduced. I didn't keep it long, and I'm glad! It's clear Nissan doesn't understand Ternary chemistry. Even at the slow speeds the Leaf can DCFC, it still experiences rapid degradation. On Fri, Jan 19, 2024 at 9:44 AM Lee Hart via EV <ev@lists.evdl.org> wrote: > > -- > Excellence does not require perfection. -- Henry James > -- > Lee A. Hart https://www.sunrise-ev.com > -----Original Message----- > (-Phil-) wrote: > > No, if the battery is at 60F it's simply not going to be able to run the > reactions needed to charge. The minimum temp for full speed supercharging > is around 125F. > > Wow; that's amazingly hot. I had no idea Tesla's batteries had to run that > hot to charge. > > Do these temperature limits only apply to supercharging? I.e. can you > charge at lower rates at lower temperatures? > > Is this a characteristic of Tesla's batteries? Or of LiFePO4 in general? > > > My 2013 Leaf is sitting outside in 0 deg.F temperatures, and will charge > and do regen. It has a battery heater, but it doesn't turn on until it gets > below about -10 deg.F. > > Lee > _______________________________________________ > 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/20240119/e563e6be/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
