Bill, I have dug through many scientific papers on Li batteries and how they work and I haven't been able to find anything about a theoretical self-discharge mechanism. I have found some explicitly talking about the lack of a charge shuttle mechanism like in lead-acid batteries, however.
One paper I read has a section devoted to figuring out a charge shuttle mechanism to add to a Li cell. It isn't a paper for the faint of heart, however. It is "Nonaqueous Liquid Electrolytes for Lithium-Based Rechargeable Batteries" by Kang Xu published in the Chemical Review, 2004, Vol. 104, No. 10, pp. 4303-4417 and published on the web 09/16/2004. While I'm sure I don't get it 100% of the time I try to make sure I say, "LiFePO4 cells have no theoretical self discharge mechanism." This, according to all I have been able to find on the cells, is true. Also, the most ardent anti-BMS people I have found have in fact done a lot of searching of the scientific literature and came to the same conclusion. It was not just something they made up to support their anti-BMS position. If you have other literature showing what the self-discharge mechanism is please share it. On Fri, Jun 19, 2015 at 11:46 AM, Bill Dube via EV <ev@lists.evdl.org> wrote: > This "zero self-discharge" myth seems to be a common thread with the > "anti-BMS" crowd. I don't know where this misinformation comes from. > > All cells have self-discharge. It is just a matter of degree. Also, > the self-discharge varies from cell to cell. That's why you need a BMS. > These are well-documented facts for all those that care to investigate, > either through the scientific literature or by simply systematically testing > cells for themselves (as Lee Hart has done.) > > I strongly suspect the "zero self-discharge" myth comes from the > same unscientific source that the anti-BMS myth has sprung from. > > Bill D. > > _______________________________________________ > 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) > -- David D. Nelson http://evalbum.com/1328 http://www.levforum.com _______________________________________________ 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)
