While I'm not an expert on LiIons, everything I've read indicates you'll get the best life from them if you avoid discharging them past 10-20% SOC and also avoid charging them past 90% SOC.My Chevy Volt has a solid 50 mile range (+/-) and a 18.4kWh pack. From what I understand the chevy engineers programmed the volt so you can't even access the lower 20% or upper 90%, at least not until the pack starts degrading. As for cold weather, my understanding is that this might not reduce range directly, but all of the production EVs seem to include battery heaters to avoid damaging the battery when it's cold. These heaters take a fair amount of energy and this DOES reduce your driving range. So 40kWh sounds about right(to me) for a long life pack with a reliable 100 mile range. Whether it's worth it or not is a personal decision.If it were me, I'd check the insurance auctions, etc. and see if I could pick up either a couple Chevy Volts, or one Chevy bolt that had been wrecked but still had good batteries.I would also consider a BMW I3 (really nifty battery temp management system) I would avoid Nissan Leaf's. They have horrible battery management systems (at least the older models) and their packs tend to degrade quickly. ------------------------------
Message: 9 Date: Tue, 21 Jan 2020 14:45:28 +0000 (UTC) From: paul dove To: [email protected] (mailto:[email protected]) Cc: David Delman Subject: Re: [EVDL] Is it worth it? Message-ID: Content-Type: text/plain; charset="utf-8" You don't need a 40kWh lithium battery to go 100 miles. A good rule of thumb is to take the weight of the vehicle and divide it by 10 to get Wh/mile. A 3200 lb vehicle will use 320 W/mile. So a 32kWh battery would take it 100 miles. I had a 16kWh battery in my conversion and it would do 50 miles on a charge.The car weighed 2900 lbs after conversion and 3100 lbs with me in it. 16000wh /? 310Wh/m = 51.61 miles. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200122/1e9298bd/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
