As David Roden pointed out, Nikki Gordon-Bloomfield is a probably good to talk to, being a classic car nut with a soft spot for Morris Minors. She's done a lot of research toward converting her's. You can probably contact her through http://www.aminorjourney.com/ or http://transportevolved.com/ Or she might see your post here, if her packed life allows.
Mike Shipway-- On Sat, Oct 19, 2013 at 4:44 PM, David Nelson <[email protected]> wrote: > On Fri, Oct 18, 2013 at 1:27 AM, Martin WINLOW <[email protected]> wrote: > > > > You MUST use a BMMS if you go with lithium - some will say you don't but > £kkk's is a lot of money to lose if you cook your battey pack due to > overcharging it or kill one or more cells over-discharging it. If it's > parked in your garage being over-charged, you could lose that too! A good > one would be about £6-700 depending on how many cells you have. > > > > This is definitely something you will want to thoroughly research your > self. There are many different variables in how people have treated > LiFePO4 prismatic cells. Without accurate details it is difficult to > know what killed a battery. There are cases where a BMS system killed > some or all of a pack and cases where it didn't. There are cases of > systems without a BMS which had battery failure so the assumption was > that a BMS would have prevented the issue. That is not necessarily the > case! > > I was told by some people on this list that if I didn't have a cell > level BMS on my pack that it would drift out of balance very quickly > and I would kill a battery. Well, that hasn't happened to me in the > past 27 months of no balancing. Also, John Hardy in the UK posted at > http://blog.evtv.me/2013/10/das-boot/#comment-11955 "I now have 900 > cycles on the original 8 cell pack of CALB40s. Voltage variance has > DROPPED from 28mV at cycle 50 to about 6mV for the last 100 cycles or > so with no active or passive balancing." > > This is why you need to do your own research on this matter to > determine really what you are willing to live with. There are several > accounts of people who had left some sort of parasitic load on their > EV and parked it for an extended period of time only to come back with > a pack of LiFePO4 cells at extremely low voltages, some less than a > volt. Because they bottom balanced their packs they did not lose any > cells. > > Again, do your homework. > > 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) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20131020/2f366aec/attachment.htm> _______________________________________________ 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)
