Depends on what you mean. If you mean to never charge until you always get down to 10%, then that is a bad idea. But if you are meaning to always charge (top-off) after every use, and then *occasionally* do the discharge to 10mi followed by a full charge, then absolutely, that is a best way to do it.
The frequent topping off maintains the longest possible battery life, but at the "cost" of slowly having the car computer loose track of actual capacity since it rarelyl sees a deep discharge and so loses track of whre the "bottom" really is. That's why the recommendation to occasionally discharge down to 10% so that the CPU re-learns where the bottom is and can re-calibrate the GUEGAUGE... I had this discussion with a Nissan Battery engineer who just happened to sit next to me on the plane. He said the reason the car MANUAL says to not frequently top-off but to only charge when the battery gets low is not so much to protect the life of the battery, but so that their PUBLIC RELATIONS staff is not deluged with onwers complainng all the time that the guessgauge told them 62 miles when they only got 61, etc... By making sure the users were charging from a low state, the guessgauge can do a more accurate job. (at the cost of long term life)... Bob, WB4aPR -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of Rush Dougherty via EV Sent: Wednesday, October 05, 2016 5:15 PM To: 'Mark Hanson'; 'Electric Vehicle Discussion List' Subject: Re: [EVDL] Best charge rate for longevity Or you can follow the advice of an engineer from Tennessee that Tom True talked to - "The final recommendation from him was to discharge the pack to 10 miles or so in range (according to the instrumentation), and fully recharge about once a month to "refresh" the battery" Which totally contradicts what the engineer said in the sentence before, " Explaining that if you let the battery pack get below 10%, it would typically brick (not allow a charge), and above 90%, that your could experience a thermal even ( Thermal runaway & fire)." Confusing, right? Rush Dougherty Tucson AZ 85719 > -----Original Message----- > From: EV [mailto:[email protected]] On Behalf Of Mark Hanson > via EV > Sent: Wednesday, October 05, 2016 1:34 PM > To: Electric Vehicle Discussion List > Subject: [EVDL] Best charge rate for longevity > > Thanks folks > > So if the Leaf charges at the 100% setting to 4.12vpc and 80% to > 4.05vpc and battery > university says max life of 2k cycles is at 4.00vpc then I should > change my charge cut off at > 80% for daily short trips of 15 miles typical. Plus since balancing > occurs all the time there's > no need to charge at 100% except for long trips Best regards Mark Sent > from my iPhone > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag > racing at NEDRA > (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
