Sorry, I see I typo'ed 3/18 should be 3./18. JR talks about the LiMn chemistry from the POV of what voltages to use with BB'ing, and why he thinks BB'ing is appropriate. There is a lot of good information about how the Leaf packs he has are constructed. It sounds like he doesn't expect the 80% life to be nearly what LiFePO4 would be. But still good. He is very happy with how it is put together. Lot's of nice (over)engineering. Of course, he is selling them, so there may be some bias. You can see a lot watching the videos. I couldn't take issue with anything I saw or that he said.
Anyway, I think you could trade off the cost of a BMS for the labor to BB the pack. That is a trade off I almost always make by nature. On Thu, Apr 3, 2014 at 6:45 PM, Michael Ross <michael.e.r...@gmail.com>wrote: > A DIY'er might consider bottom balancing. EVTV is doing just that with > multiple Leaf packs they picked up from Israel. I think the 3/21 episode > covers this a bit. I have not watched 3/18 yet. > > http://www.evtv.me.s3-website-us-east-1.amazonaws.com/vidarch.html > > > On Thu, Apr 3, 2014 at 2:55 PM, David Rees <dree...@gmail.com> wrote: > >> On Thu, Apr 3, 2014 at 10:37 AM, Lawrence Rhodes >> <primobass...@sbcglobal.net> wrote: >> > I got a deal for a Leaf pack for 2500 dollars. However I've gotten an >> estimate for >> > thousands for the BMS. Is there a reliable BMS I don't have to spend >> thousands >> > on? Will be dividing up the pack into strings of parallel and series >> to make 156vdc >> > after charging. >> >> MiniBMS would be an option if it supported different voltage cutoffs >> (does it? I don't know). But even then you need 48 cell-modules if you >> split the pack in half which is going to cost you about $700. >> >> -Dave >> _______________________________________________ >> 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) >> >> > > > -- > Put this question to yourself: should I use everyone else to attain > happiness, or should I help others gain happiness? > *Dalai Lama * > > Tell me what it is you plan to do > With your one wild and precious life? > Mary Oliver, "The summer day." > > To invent, you need a good imagination and a pile of junk. > Thomas A. > Edison<http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> > > A public-opinion poll is no substitute for thought. > *Warren Buffet* > > Michael E. Ross > (919) 550-2430 Land > (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google > Phone > (919) 631-1451 Cell > (919) 513-0418 Desk > > michael.e.r...@gmail.com > <michael.e.r...@gmail.com> > > > -- Put this question to yourself: should I use everyone else to attain happiness, or should I help others gain happiness? *Dalai Lama * Tell me what it is you plan to do With your one wild and precious life? Mary Oliver, "The summer day." To invent, you need a good imagination and a pile of junk. Thomas A. Edison<http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 550-2430 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 631-1451 Cell (919) 513-0418 Desk michael.e.r...@gmail.com <michael.e.r...@gmail.com> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140404/0c581fb1/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)
