Can you share link to the webpage you are referencing? I don't believe you can measure voltage and calculate such a thing. Voltage is simply not a very good way to determine SOC.
Charging to 100% is not going to cause a "thermal event." High temperatures caused by large discharge (which lowers the SOC) is one way to get them hot. Some chemistries (early Leaf for example) deteriorate at an accelerated rate when charged to a high SOC, AND exposed to too high an ambient temperature - such as gridlock in Phoenix where they experienced poor life performance of early Leafs. Pay attention to the "AND." 100% SOC or temperature alone may not damage a li ion cell. But so much of thise depends on thigs we don't know, can't know, are told incorrectly, and so on. You pretty much should use whatever procedure the EV manufacturer says to use for charging a pack. Don't try to second guess them. You are unlikely to accumulate the necessary information to do it in a more effective and rational way. In numerous cases with older BEVs the manufacturers are working from their own poorly conceived testing and basic understanding. Presumably newer BEVs are better, but who knows. I trust Tesla, but not sure about anyone else. On Wed, Oct 5, 2016 at 4:34 PM, Mark Hanson via EV <[email protected]> wrote: > Thanks folks > > So if the Leaf charges at the 100% setting to 4.12vpc and 80% to 4.05vpc > and battery university says max life of 2k cycles is at 4.00vpc then I > should change my charge cut off at 80% for daily short trips of 15 miles > typical. Plus since balancing occurs all the time there's no need to > charge at 100% except for long trips > Best regards > Mark > Sent from my iPhone > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at 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> Mobile and Google Phone [email protected] <[email protected]> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20161005/48375ec5/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
