Message: 13 Date: Mon, 6 Jan 2014 11:13:52 -0800 From: David Murphy <[email protected]> So does that mean you can't use Lithium below 0C / 32F ? That doesn't make any sense for those who live in the northern latitudes & Canada. I charge about .1C anyway (13 amps on CALB 130ah batts). I've charged at 20F but tonight it'll be 0F in VA. What about folks in Minnisota like Lee? I guess they use battery heaters but I thought most chemistries you could charge cold just take a bit longer due to higher internal resistance.Best Regards,Mark To: Electric Vehicle Discussion List <[email protected]> Subject: Re: [EVDL] Charging Lithium below freezing, should I drive my gas car? Message-ID: <cahtzjazxhv3i2+ugau3ms_tyrnddvywyf2-dwjkt846nd7c...@mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1"
So the cells I am talking about are referred to as Lithium Ion Polymer, not sure if that is the same chemistry... The specs for these type of cells define three temperature ranges for charging. (cell temp, of course, not ambient) from 0C to 10C 0.1C max Constant Current (CC) to 4.2V, 4.2C Constant Voltage (CV) to 0.05Cmin cut-off 10C to 23C 0.5 max CC to 4.0V, 0.2C CC to 4.2V, 4.2V CV to 0.05C 23C to 45C 0.5C CC to 4.2V, 4.2V CV to 0.05C for discharge, the oeprating temp is -20C to 60C Hope that's helpful... david -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140106/bfe08bc2/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)
