On 27 Apr 2015 at 23:59, David Rees via EV wrote: > The lithium battery controller on the LEAF is this way. If you want to > swap an entire battery pack out, you have to be able to reprogram the > LBC. Otherwise you have to open up the pack and either swap out all > the modules or the LBC.
It sounds like they're following the model of some laptop computers. A couple of years ago I was looking into the idea of rebuilding an old laptop battery with fresh cells. I found a writeup online from someone who had tried it - and failed. It seems that the manufacturer took a page from the printer manufacturers' books. The engineers built a counter into the BMS. When it had turned around some designated number of amp-hours, the BMS simply quit allowing the lithium cells to charge, regardless of their actual condition. The BMS isn't available as a spare part, though there are some (possibly dodgy) Chinese generic substitutes. This is not quite the same as the Leaf battery model cited, I guess, but it's a similar principle: make it more difficult for the independent mechanic or private owner to service the battery. The next step in the Leaf is to chip every individual cell, I suppose. And then there's Renault's leased EV battery that stops accepting charges if you don't keep paying the monthly rental. And how about the entire EVs that you can't own, but only lease, from the EV1 and Honda EV Plus to the current Fit EV? It seems as if the new generation of EVs was practically born into this restrictive model. :-( 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 For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
