So - in a sense the availability of QC could improve the Leaf's pack life if you only charge to 80-ish percent SoC and rely more on QC to complete the trips that you otherwise would have needed a full charge for?
Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: cwa...@proxim.com Private: http://www.cvandewater.info Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626 Tel: +91 (040)23117400 x203 -----Original Message----- From: EV on behalf of Michael Ross via EV Sent: Sat 3/28/2015 10:53 AM To: David Rees; Electric Vehicle Discussion List Subject: Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?) Yes, the rate of charge is not a problem, it is being fully charged AND too hot. https://www.youtube.com/watch?v=pxP0Cu00sZs On Sat, Mar 28, 2015 at 2:06 AM, David Rees via EV <ev@lists.evdl.org> wrote: > On Fri, Mar 27, 2015 at 5:43 AM, Paul Dove via EV <ev@lists.evdl.org> > wrote: > > Well that just verifies what I said. You have no data other than coming > from > > the Leaf instruments. If it calculates capacity incorrectly it will shut > down the car. > > You still don't know if the battery failed or the capacity measurement > is off. > > One would have to measure voltage and amp hours to really know what is > happening > > It's pretty easy to verify pack voltage using LeafSpy or LeafDD or > similar tools. I've verified that my LEAF is down close to 25% after > almost 4 years and almost 40k miles in southern California. > > That said, the INL (Idaho National Laboratory) tested four 2012 LEAFs > in Arizona over a period of about 2 years and 50,000 miles - two were > only charged on L2, the other two were only charged using DC QC. > > http://avt.inl.gov/fsev.shtml > http://avt.inl.gov/pdf/energystorage/DCFC_Study_FactSheet_50k.pdf > > Battery capacity was verified by pulling the packs and measuring > capacity using a defined test protocol. > > While the DC QC cars fared slightly worse, at the end of 50k miles the > L2 charged cars had lost almost 25% of their capacity and the QCed > cars lost about 27% of their capacity. > > So yeah - the 2011-2012 LEAFs definitely lose capacity fast, > especially in hot climates. The good news is that frequent QC doesn't > appear to significantly change your rate of capacity loss unless you > use QC nearly exclusively. > > -Dave > _______________________________________________ > 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) > > -- To invent, you need a good imagination and a pile of junk. Thomas A. Edison <http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 585-6737 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 631-1451 Cell michael.e.r...@gmail.com <michael.e.r...@gmail.com> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150328/6b95d1a1/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) -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/ms-tnef Size: 5231 bytes Desc: not available URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150328/65acdebd/attachment.bin> _______________________________________________ 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)
