Yes. That is pretty much what the best scientists working on it say. Keeping it from getting too hot (which may not be all that hot, and I have not read anything that tells what temperature or other thermal history is implicated) when fully charged should eliminate the degradation caused by the reactive, delithiated positive electrode from tearing up the electrolyte.
You CAN control how much of a charge you put on it, and you CAN simply make sure you run some of the charge off right away. This is bound to improve matters. $10k and a some Leaf cells and you might get a study done to sort it out better. Rank speculation: NIssan probably won't fund it, or reveal if that have - they simple made the problem go away by some needed modifications to the pack. There are other potential problems, but this is what has messed up the Leafs in places like AZ according to Jeff Dahn. On Sat, Mar 28, 2015 at 5:10 PM, Cor van de Water via EV <[email protected]> wrote: > 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: [email protected] 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 <[email protected]> > wrote: > > > On Fri, Mar 27, 2015 at 5:43 AM, Paul Dove via EV <[email protected]> > > 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 > > [email protected] > <[email protected]> > -------------- 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) > > -- 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 [email protected] <[email protected]> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150328/84e42ffb/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)
