Then you run up against an insignificant sample size. Can you get specs and trust them? When I was trying to sort this out in the 2014 time frame, testing was ALL crap. You couldn't believe much of anything. Partly because no one really know how to test well, and many did not want to know. The tradition was to run a lot of cycles at levels that caused no damage at all.
I sort of forget the original query, isn't this about A123? Prismatics? Those are pouch cells. I have developed a cognitive bias against that form. <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Thu, Apr 16, 2020 at 4:59 PM paul dove <dov...@bellsouth.net> wrote: > Good point but you don't know how much faster it will degrade at 50 amps. > > 75% in 800, 500, 200 cycles, etc. > > I would buy one and test it first. > > On Thursday, April 16, 2020, 1:54:04 PM CDT, Michael Ross via EV < > ev@lists.evdl.org> wrote: > > > It is important to figure out what the #cycles means to you personally. > 1000 cycles is a lot even daily - for some people. > > On Thu, Apr 16, 2020 at 2:39 PM paul dove via EV <ev@lists.evdl.org> > wrote: > > > Cycle Life (retaining 70% capacity) at 20A Discharge, 100% DOD: >1,000 > > cycles > > > > This tells me you don’t want to discharge at 50A if at 20A you are down > > 30% capacity in 1000 cycles. > > > > Sent from my iPhone > > > > > On Apr 16, 2020, at 4:25 AM, Lawrence Rhodes via EV <ev@lists.evdl.org > > > > wrote: > > > > > > > > > https://sfbay.craigslist.org/eby/ele/d/hayward-a-battery-cells-33v-2500-mah/7098505376.html > > > > > > Are these batteries a wise purchase? I am building it for a 40 amp 72v > > controller. This would be my first lithium build. I think I could bet by > > with one string of 21 but would 2 or three strings be wiser? I don't need > > the range just hill climbing. Since the batteries can put out 50 amps > > continous why spend more money unless the pack would last longer or be > more > > durable. Just brainstorming here. What BMS etc.? Thanks Lawrence > > Rhodes...should I make a spot welder? Doesn't seem too hard. > > > > > > > > > > > > _______________________________________________ > > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > > ARCHIVE: http://www.evdl.org/archive/index.html > > > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > Please discuss EV drag racing at NEDRA ( > > http://groups.yahoo.com/group/NEDRA) > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200416/e031eceb/attachment.html > > > > > _______________________________________________ > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > ARCHIVE: http://www.evdl.org/archive/index.html > > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > Please discuss EV drag racing at NEDRA ( > > http://groups.yahoo.com/group/NEDRA) > > > > > > -- > Michael E. Ross > (919) 585-6737 Land > (919) 901-2805 Cell and Text > (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Tablet, > Google Phone and Text > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200416/a14201ec/attachment.html > > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/index.html > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- Michael E. Ross (919) 585-6737 Land (919) 901-2805 Cell and Text (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Tablet, Google Phone and Text <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200416/df0564f9/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
