Re: [EVDL] Lithium Batteries and Cold Weather
Hi Dennis, I have used my Elise EV with 50Ah cells through some pretty cold winters (-15C) here in the UK with few if any problems. You do get a larger voltage sag when accelerating but then you don't need to as much when its icy. Range may be reduced but then it is anyway with all the heating, wipers and head lighting usage. The one thing you must remember is to never charge when the cells are below 0C (32F) as it damages them. I always plug in after a journey when the cells have heated themselves so its never really and issue. Russ On Mon, 20/10/14, Pestka, Dennis J via EV ev@lists.evdl.org wrote: Subject: [EVDL] Lithium Batteries and Cold Weather To: Electric Vehicle Discussion List ev@lists.evdl.org, ne...@yahoogroups.com ne...@yahoogroups.com Date: Monday, 20 October, 2014, 12:54 I'll be entering the first winter with my new pack of Lithium Batteries and had a few questions. I know that the cold weather will affect my range, but need some information on what I'll see. Pack is (50) Calb CA-180 AH Cells. Total @ 3.35V ~ 30,000 Whr's. 21,000 Whr's @ 70% Current Average for ~ 50 trips is ~ 240Whr's per mile. Will I see any different readings on my instruments ? - Higher current draws. - Higher Whr's per mile. - Larger Voltage sag. - ? ? ? - Or do I just need to assume I have a smaller pack. If so approximately what %. Just trying to make sure I don't drain the pack, leave myself stranded, and possibly damage the cells. - Thanks; Dennis Elsberry, MO http://www.evalbum.com/1366 http://evalbum.com/3715 -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141020/18524118/attachment.htm ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use 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 For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Lithium Batteries and Cold Weather
On 10/20/2014 06:54 AM, Pestka, Dennis J via EV wrote: I'll be entering the first winter with my new pack of Lithium Batteries and had a few questions. I know that the cold weather will affect my range, but need some information on what I'll see. My 48 cell TS pack alarms as temperatures decrease. At around 1C around 45 deg F. I don't see any great range reduction; I just try to moderate my current demands. Here, where temperatures rarely drop below 32 deg, there is little pressure to park in a heated area. I imagine there would be little to no cold weather effect if I parked in a heated garage. ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Lithium Batteries and Cold Weather
Dennis, I have the same cells and almost identical pack size. Entering my fourth winter I would say that my range takes about a 20-25% hit in the winter. As previously mentioned by Russ it’s a combination of things: heat, wipers, road conditions, and the fact that the chemistry just isn’t as efficient in cold weather. For comparison I also have a Tesla. Even with the thermal battery pack management and all the other fancy stuff I’ve found that in the winter it’s range is reduced by about 10-20% depending on conditions. Barry On Mon, 20/10/14, Pestka, Dennis J via EV ev@lists.evdl.org wrote: Subject: [EVDL] Lithium Batteries and Cold Weather To: Electric Vehicle Discussion List ev@lists.evdl.org, ne...@yahoogroups.com ne...@yahoogroups.com Date: Monday, 20 October, 2014, 12:54 I'll be entering the first winter with my new pack of Lithium Batteries and had a few questions. I know that the cold weather will affect my range, but need some information on what I'll see. Pack is (50) Calb CA-180 AH Cells. Total @ 3.35V ~ 30,000 Whr's. 21,000 Whr's @ 70% Current Average for ~ 50 trips is ~ 240Whr's per mile. Will I see any different readings on my instruments ? - Higher current draws. - Higher Whr's per mile. - Larger Voltage sag. - ? ? ? - Or do I just need to assume I have a smaller pack. If so approximately what %. Just trying to make sure I don't drain the pack, leave myself stranded, and possibly damage the cells. - Thanks; Dennis Elsberry, MO http://www.evalbum.com/1366 http://evalbum.com/3715 -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141020/18524118/attachment.htm ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use 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 For EV drag racing discussion, please use 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 For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
