On 10/09/2013 05:27 AM, rustybkts wrote: > Voltage dip is quite severe in winter at -10C or lower and because my cells > are not heated, I always charge immediately after driving in cold conditions > so the cells are over 0C. > > My new build EV has 100 x 100Ah CALB and performed superbly last winter with > negligible voltage dip in all temperatures.
I am converting my lead-acid truck to 100Ah CALBs and they're all going in insulated, heated battery boxes. I won't actively heat them in use but if they're at or below 0C when I plug the truck in, it will run the heaters until the batteries are warmer before turning the charger on. > BTW, my son is using an M1330 Dell laptop which is well over 6 years old and > it still runs for hours on the original cell pack. It has always been in > daily use and very often on battery only. I actually think that's better. Laptop batteries are usually murdered by their charger. Laptops that I lug around and use on batteries always seem to last longer than ones that mostly sit on a desk plugged in. I find the latter's capacity diminishes rapidly over time. --Rick _______________________________________________ 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)
