Actually I do have evidence. I did extensive testing with LiFePO4 cells. I found no evidence of self discharge or of balance issues with cells connected in series.
Sent from my iPhone > On May 11, 2018, at 4:43 PM, Bill Dube via EV <ev@lists.evdl.org> wrote: > > Paul, > > Do you have any evidence of this or is it speculation? > > (Sorry, I just couldn't help myself.) > > Bill D > > >> On 5/11/2018 12:47 PM, paul dove via EV wrote: >> Thanks that was interesting. It’s more likely that the Dakota BMS was >> causing the imbalance with parasitic unbalanced loads, however. >> >> Sent from my iPhone >> >>>> On May 11, 2018, at 11:56 AM, EVDL Administrator via EV >>>> <ev@lists.evdl.org> wrote: >>>> >>>> On 10 May 2018 at 6:35, paul dove via EV wrote: >>>> >>>> Do you have any evidence of these batteries failing because of out of >>>> balance >>>> conditions or is that speculation >>> The battery I mentioned ("Dakota" brand) was advertised as having a true >>> balancing BMS. >>> >>> Discussion of PCBs vs BMSes here: >>> >>> http://ka7oei.blogspot.com/2013/05/lithium-iron-phosphate-lifepo4.html >>> >>> David Roden - Akron, Ohio, USA >>> EVDL Administrator >>> >>> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = >>> EVDL Information: http://www.evdl.org/help/ >>> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = >>> Note: mail sent to "evpost" and "etpost" addresses will not >>> reach me. To send a private message, please obtain my >>> email address from the webpage http://www.evdl.org/help/ . >>> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = >>> >>> >>> _______________________________________________ >>> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >>> http://lists.evdl.org/listinfo.cgi/ev-evdl.org >>> Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) >>> >> _______________________________________________ >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >> http://lists.evdl.org/listinfo.cgi/ev-evdl.org >> Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) >> > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)