---------------------------------------- > Date: Mon, 30 Mar 2015 14:00:00 +0000 > To: [email protected] > Subject: Re: [EVDL] ENERDEL Battery Experiences > From: [email protected] > > Hello Michael, > Some companies do not pay a lot of attention to their website and rely on > their marketing department. EnerDel is an OEM supplier and I suspect not > interested in attracting hobbyists via the internet. > The product, cell to complete battery systems, is made in the Indiana > facilities. There were 2 plants operating when I toured last, about 2 years > ago. One place made the cells starting with slurry mix. They were > transferred to the other plant to complete formation and packaging or > assembly into modules. They are LiNMC chemistry. They make one basic cell > there in several varieties. > The pdf you linked shows 2 cell varieties. The CE175-360 is 17.5Ah and > indicated at 2500 cycles to 80%. The CP160-365 is 16Ah and indicated at 3000 > cycles to 85%. I believe the test procedures can be found by searching for > USCAR Advanced Battery Consortium. > Jeff M
Hmm, But the problem with these cells seems to be a very short life at elevated temperatures It would be VERY interesting to look at a test from cells in the IEC 61427 evaluation (with voltages adjusted for the Li-chemistry) Especially the phase B part might give these cells even a shorter life than Lead Acids?? "The complete test (cycles and capacity testing) is performed under elevated temperature (+40 °C ± 3 °C) " "Phase B, shallow cycling at high stage of charge” 100 cycles discharge with current = 1,25 * I 10 [A] for 2h recharge with current = I 10 [A] for 6h capacity test: discharge with current = I 10 [A] final voltage = 1.80Vpc recharge to fully charged condition http://www.trojanbattery.com/pdf/RE_IEC61427_Premium.pdf http://www.battcon.com/PapersFinal2009/BruhlPaper2009FINAL_17.pdf Enerdel; please look at the cycle test i graph at the last page It says c/2 , so it is 2 hours up, + 2 hours down for each cycle(?) http://www.enerdel.com/wp-content/uploads/2013/11/Cell-Binder.pdf So I guess that will be a total of 4hours time for each cycle (right?), and about 6 months only in total at this elevated temperature, and not long time was spent at SOC = "full" then. Right? the graph indicates just 1000, at 45 degrees. but combine that with TIME.. and closer to normal/ full SOC, The graph in the lower right side also indicate only 6 Years life(?) at only 30 degrees cell temp, and that was at low 75% SOC.. :-/ / John _______________________________________________ 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)
