Hi Willy, Gail and All, The Citi-Car is a high current EV that 240 amps from the battery just isn't going to get it. It takes 125 amps just going down the road steady as only 48vdc nom. The spikes from the contact controller will take their toll. One would need 800 amp peak rating on the batteries with an E controller of at least 600amp peak for flat areas and 1,000amps in hilly areas. I'd stick with lead for one more cycle in his case and when those die, lithium especially used will be lower cost then. While this can take some money, it would make a nice EV. As the bodies die from the sun making a new more aero one with lithium batteries would be even nicer, go faster, farther. I volunteered to make new composite stock shaped front ones as a tribute to Bob Rice and the C-Car list had 8 people ready to buy at cost to get it started. But was denied the promised use of the only perfect front piece for the mold so because of him, C-cars will die off sadly without replacements as unlikely anyone else will make them.. Jerry Dycus From: Willie2 via EV <ev@lists.evdl.org> To: Electric Vehicle Discussion List <ev@lists.evdl.org> Sent: Friday, May 29, 2015 8:28 PM Subject: Re: [EVDL] GC batteries On 05/29/2015 06:56 PM, Gail Lucas via EV wrote: > where they can be purchased for under $90.00. Please offer opinions, > but not to upgrade to lithium. That would be overkill for a C-Car. I Well.......
I believe lithium is now about twice the price of lead for similar energy storage capacity. That's a WAG but think I've seen Leaf and Volt modules around that price. The lithium should last about 5 times as long. Lithium has far less maintenance than lead. Lithium gives you a larger fraction of stored energy, ~80% vs ~50%. I think that makes lithium FAR cheaper than lead. Is the C-Car 48v? You'd be looking at ~$800 worth of lead? Somebody estimate how much Leaf battery that you buy you. Answering my own question: http://hybridautocenter.com/HAC4/index.php?option=com_hikashop&ctrl=product&task=show&cid=3&name=nissan-leaf-battery-module-model-2012-new&Itemid=605 Six of those in series would give you about 3kwh and about 48vdc and cost less than $800 before shipping. That's only a ~50 pound battery so you would really want to put 2-4 sets of those in a golf cart type vehicle. But, a single set would supply 240a which should be plenty for a golf cart. _______________________________________________ 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) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150530/e05f8340/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)
