Since you are in your garage, put a couple incandescent light bulbs in the battery compartment to heat it up overnight.
Rush Tucson AZ > -----Original Message----- > From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Danpatgal via EV > Sent: Friday, February 20, 2015 1:26 PM > To: ev@lists.evdl.org > Subject: Re: [EVDL] Cold Charging Lithium Experiences > > Reviving this thread as we're having another very cold stretch here in the Eastern > US. > > My batteries (SE130 CALBs) are still going, but boy do they sag when it's cold like > this. It's annoying. > > I've been charging when my BMS sensors (atop each cell) are over 0C, which they > have generally remained over the past few weeks despite the cold (thankfully my > garage generally stays above 0C). > > But, my follow-up question on all this is if the BMS measurement is good enough. > For example, I guess there is resistive heat that gets generated upon > charge/discharge/shunting that probably make the sensors read higher than the > cells themselves. How much, I don't know. > > Does anybody have any thoughts, experience on this? We've gotten down to -20C > with a HIGH today of only -10C ... yet I'm charging. I didn't really want to do it, but I > was dragging so much on the road with low SOC%, I had to, or risk having to really > limp home. > > > > ----- > Dan Gallagher > http://www.evalbum.com/3854 > > -- > View this message in context: http://electric-vehicle-discussion- > list.413529.n4.nabble.com/Cold-Charging-Lithium-Experiences- > tp4667675p4673895.html > Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. > _______________________________________________ > 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)
