I'm really surprised that this is such a controversy... I thought that everybody knew that one of the main reasons that the battery packs for all OEM EV's did last such a long time was that the BMS software stopped the charging at about 80% and will not let the battery pack be depleted below 20%.
If you only charge a battery to about 80% and don't let it discharge below about 20% the chemical makeup of the electrolyte is not stressed and lasts a lot longer. Roland does the same thing with his batteries. I think that if he sees only a 75%SOC, then he will not charge until the next day, thereby prolonging the life of his flooded lead acids. 8 years if I remember correctly. Rush www.TucsonEV.com > -[original] > > ... Rated range rises to 84 miles Most importantly to new buyers, the > > range of the 2014 Leaf is now listed as 84 miles, up from last year's > > 76 miles > > > > That number seems like a significant improvement, but in fact the only > > change made to the car is the elimination of a software option that > > let owners set battery charging to stop at 80 percent. > > > > In other words, the 2014 car has exactly the same battery, drivetrain, > > and real-world range as the 2013--only its EPA range rating has > > changed. > > > > Changing the rating math Nissan made the change because last year, > > under EPA rules, the ability to charge only to 80 percent (which may > > help lengthen battery life) required the company to blend of the > > ranges achieved under 80-percent and 100-percent charging ... _______________________________________________________ Unlimited Disk, Data Transfer, PHP/MySQL Domain Hosting http://www.doteasy.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)