Peter, Storing LiIion batteries is usually not the problem, although it is recommended for long life to not store them fully charged, especially not in hot environment. Damage is done when (fast) charging in cold - the colder, the slower they need to charge to avoid damage. Nissan Leaf only has battery warmers, those will only come on when the car is on or plugged in and below a certain temp (I believe -30) I don't know about the Volt, it might simply stop maintaining the temp when the EVSE is disabled, you can find out by simply trying and see if the state of charge of the Volt changes when the EVSE is not enabled. Cor.
-----Original Message----- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Peter VanDerWal via EV Sent: Thursday, January 25, 2018 7:40 AM To: ev@lists.evdl.org Cc: e...@vanderwal.us Subject: [EVDL] LiIon thermal management question (Chevy Volt) I've noticed that if I leave my Volt plugged in and the outdoor temperature gets very high or very low the Volt will occasionally draw power for 10-15 minutes. I assume this is the thermal management system working to keep the batteries at their "optimal" temperature. http://www.vanderwal.us/energy/Volt-ico.png What I'm wondering is how important is this (if any) to extending the life span of the batteries? I'm guessing that when it's cold out, keeping the batteries warm just improves performance and that it won't hurt the batteries to spend a few hours at 20 deg F. However, what happens when it's 90 deg out? The reason I'm asking is if it's not critical when the car is parked, I'd like to avoid wasting 1-3 kwh a day. I can always re-enable the EVSE before driving the car so the batteries will be at their designed temperature when being discharged. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20180125/fb2d 69c2/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
