Thanks Phil for your informative reply. It sounds like the Leaf software turns on and off intermittently when around the set point , which makes braking a bit disconcerting. The Tesla and the Bolt just seem to turn off like a Schmidt trigger with some hysteresis , not flutter around a cold set point like the Leaf does. Stay Charged, Mark
Sent from my iPhone On Mar 19, 2023, at 6:43 PM, (-Phil-) <philp...@gmail.com> wrote: Most Lithium chemistries will be destroyed if charged below freezing due to plating of the anode with metallic lithium, so the BMS will not allow charge, even though discharge is fine. You have to heat the pack to allow charging, this is why all EV batteries have some way to heat the pack if they will be used in cold climates. If your pack is not too cold, you might be able to warm it up enough just by drawing current from it. On Sun, Mar 19, 2023 at 3:26 PM Mark Hanson via EV <ev@lists.evdl.org> wrote: > Hi Folks > Last year when regen was intermittently dropping out at 26F degrees, I took > it to the stealership who said it was a bad 12V battery they wanted to > replace for $500. I got an Optima at Advance Auto and then this year > (surprise ) the problem is back. I assume they must be turning off the regen > when it gets below 26F. Not sure why since the battery tolerates 100s of > amps load, going through other way shouldn’t matter. > Best regards > Mark > > Sent from my iPhone > _______________________________________________ > 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/20230319/d20586f2/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
