Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread David Nelson via EV
I'm not sure what true SOC the Leaf charges to and calls 100% but on my 2016 Kia Soul EV+ 100% on the display corresponds to 95% from the BMS. The two displays agree at 25% SOC and below that the display SOC is lower than actual. If the relationship is linear then 0% SOC on the display is about

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Peri Hartman via EV
Recalibration: that sounds like a breach of contract on Nissan's behalf. To be positive, overall I think Nissan has done a great job. But in this case, I'd fight back. When you by a leaf, you sign a contract and recalibrating the way the battery is measured sounds cleanly like a case of

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Cor van de Water via EV
Willie, Not dynamically, just a one-time upgrade (dealer visit required). Many Leaf owners who lost the 4th bar and thought they qualified for the warranty battery replacement were miffed to see the dealer really enforcing the Nissan requirement that the warranty will only be honored after the

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Cruisin via EV
That's what happens when you use LifP04 cells. You never know when a cell will go south for no reason. I have about 75 customers including my own conversions using NEW Volt cells and have NEVER had a bad cell in over 5 years. Who else can say that. Cannot vouch for those who buy used batteries

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread David Rees via EV
On Tue, Oct 4, 2016 at 10:12 AM, Mark Hanson via EV wrote: > If that's the case I wonder why Nissan dropped the less than 100% requirement > from the newer 2014 and up vehicles? I guess I don't understand why fully > charging and equalizing the cells would hurt battery

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Willie2 via EV
On 10/04/2016 12:29 PM, Cor van de Water via EV wrote: on the battery as the Leaf *does* degrade its battery by 40% to approx 60% capacity in approx 50k mi in warmer climates (that is the point where Nissan gives a warranty battery replacement, even though they promised 70% but re-calibated the

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Cor van de Water via EV
Simple, The EPA calculated the Leaf range based on the average of charging to 80% and 100%. Totally crazy, because anybody needing max range would charge to 100% but that was why Nissan removed the 80% option, even though customers wanted to keep it. I always charge to 80% to be gentle on the

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Mark Hanson via EV
Thanks Corbin If that's the case I wonder why Nissan dropped the less than 100% requirement from the newer 2014 and up vehicles? I guess I don't understand why fully charging and equalizing the cells would hurt battery life. Maybe just a hang on from the lead days :-). Mark Sent from my

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Corbin Dunn via EV
Yeah, I don’t know why they would change their recommendation; people might have been complaining about the limited range when only charging to 80-90%. corbin > On Oct 4, 2016, at 10:12 AM, Mark Hanson wrote: > > Thanks Corbin > If that's the case I wonder why Nissan

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Jamie K via EV
Speculation, FWIW: If the 2014 LEAF really became OK to fully charge to 100%, that may have been based on performance monitoring of the 2013 batteries not showing degradation when charged to 100%. And that would imply that it may also be OK to charge the 2013 to 100% regularly. Or it may

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread tomw via EV
Are you sure the 2013 cells were the same chemistry? I thought they were the older spinel type, not NMC. Anyway, worst case for decreasing cell life is high voltage and high temperature as shown by Dahn and other researchers, so most manufacturers recommend not charging to 100% SoC regularly. I

Re: [EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Corbin Dunn via EV
Lithium cells (of all chemistries) seem to have the fastest degradation when they are charged to 100% on a regular basis. The general consensus is to keep it in the 20-90% range. This is also what Tesla recommends for the Model S / X. I’ve also been charging my LiFEPo4 cells in my VW bug to

[EVDL] To fully charge or not to fully charge that is the question

2016-10-04 Thread Mark Hanson via EV
Hi folks In my 2013 leaf manual it says to not fully charge each cycle and only to 80 percent is preferred but in 2014 it became ok to fully charge. The chemistry is the same NMC nickel manganese cobalt cathode with a lithium electrolyte and a graphite anode. So did Nissan get it wrong? Is