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Re: Capacity Loss on 2011-2012 LEAFs

Posted: Wed Aug 22, 2018 12:54 pm
by Reddy
Reddy wrote:
RegGuheert wrote:
RegGuheert wrote:So now I'm not so sure. As I reported previously, our LEAF has been showing increasing Ah readings recently. Since crossing 50,000 miles on December 7, 2017, at 47.21 Ah, the reported capacity has increased to 48.24 Ah on Februrary 11, 2018, with about 52,000 miles on the odometer.

So, has capacity loss accelerated from 2.2 Ah/10,000 miles (30,000 mi. to 40,000 mi.) to 2.6 Ah/10,000 miles (40,000 mi. to 50,000 mi.) or has it slowed to 1.6 Ah/12,000 miles (40,000 mi. to 52,000 mi.) or both?
Two weeks later, the Ah reading has dropped 1.0 Ah down to 47.28 Ah. It was 80F one day last week, so I guess it decided to head back down.
Reg, I measured my battery yesterday, first time since 11/1/17, and my reading went up slightly from 45.80 (41,700 mi) to 45.91 AHr (44,700 mi). I have increased my driving slightly (750 mi/mo vs. my previous 500 mi/mo normal), so maybe the battery likes being used more. I fully expect to see degradation increase again next month. I recorded about 2 AHr loss last year, and I’m expecting something similar this year. Hopefully it won’t be worse, though the summer could be brutal with more 115 F temps. I think I’m still on target to lose the 4th bar in 2019, so at about 8 years and right around 55,000 mi.
Here's my seven year anniversary report after charging to 100%:
2011 SL received 8/18/11. I'm the original owner. Paid MSRP (no other choice at the time).
9 bars, 47,754 mi, 75 miles on the GOM at full charge.
AHr 44.22, SOH 67%, Hx 46.43%, 85*F temp, 4.092 V, 96.4% SOC
Extrapolating LeafSpy data collected over the past four years, I'm anticipating 8-bars on May 1st, 2019 (7.75 years).
http://mynissanleaf.com/viewtopic.php?f ... 25#p534925

Re: Capacity Loss on 2011-2012 LEAFs

Posted: Thu Oct 04, 2018 1:30 am
by cwerdna
https://www.facebook.com/groups/seattle ... %22R%22%7D has a pic of some in the Seattle Leaf group with only 5 bars.

I don't know his story, but I think I have met him before when I lived in the PNW, so I assume the car's always resided in the PNW. Maybe DaveInOlyWA knows?

Re: Capacity Loss on 2011-2012 LEAFs

Posted: Sun Nov 18, 2018 8:42 pm
by RelaxedGal
RelaxedGal wrote:I feel like I'm closing in on that 4th bar. I have a feeling it will be December of this year.
Good guess! I lost my 9th bar this morning, November 18 2018. Happy 7th birthday baby! :lol:

My car has just over 72,000 miles.

Re: Capacity Loss on 2011-2012 LEAFs

Posted: Wed Jan 16, 2019 2:04 pm
by badq45t
Wow this is maybe the longest string I have ever seen on a board. So I only found My Nissan leaf board recently, but we bought our Ocean Blue 2011 in December and loved the car. It is my wife's daily driver and for the first 5 years she owned it she had a power source at work so always easy to keep it juiced up. We live in Half Moon Bay, CA where the coldest winter I ever spent was the summer in Half Moon Bay (stolen from Mark Twain's line about SF). We lost our first bar after year 2 and then lost a few more. I took the car into the dealership as part of the front end maintenance package and informed them that our range was really bad. I heard a few things about the AZ Batteries but didn't realize that the issue was a design flaw.

So here I am today, not a Leaf fan anymore, still love the way the car drives and the reliablity has been impressive at 65k not real issues to resolve other than my battery has about 35 miles or range and my wife is hypermiling to work everday where she no longer has a charger.

Help is coming in the way of aftermarket batteries

https://fenix.systems/leafbattery

check these guys out, they plan to build a liquid cooled battery system that can be "rented" or owned and range from the meager 24 all the way to 65 khw batteries that will give the old 2011 a 200+ mile range for about the same price that Nissan is asking for the 105 mile replacement. Since I cannot wait he's taking my car as a donor for 1+ year to get it working, I am actually going to lease another Leaf in the meantime for the wife. I hate to say it but i wouldn't EVER EVER buy an electric car that doesn't feature a liquid cooling system, which every other 100% EV has except the Leaf.

I am happy to have found this board and thread. Check this guys website out, when he brings this to market it will be a game changer and can save 1000's of Leaf owners from having to tow their completely useless cars to the wrecking yard.

Re: Capacity Loss on 2011-2012 LEAFs

Posted: Thu Feb 21, 2019 11:22 pm
by cwerdna
https://www.facebook.com/groups/NissanL ... 9280055381 currently has a guy trying to sell a '12 Leaf SL in Mississippi with only 5 capacity bars remaining (7 bar loser) at just past 60K miles. He's asking for $5K which is way too high considering it only has 5 bars and has a bunch of scrapes all over the place and messed up spoiler paint, it seems.

Re: Capacity Loss on 2011-2012 LEAFs

Posted: Fri Feb 22, 2019 8:07 am
by Marktm
badq45t wrote:
Help is coming in the way of aftermarket batteries

https://fenix.systems/leafbattery


I am happy to have found this board and thread. Check this guys website out, when he brings this to market it will be a game changer and can save 1000's of Leaf owners from having to tow their completely useless cars to the wrecking yard.
Good information on fenix;

http://www.mynissanleaf.com/viewtopic.php?f=27&t=26597

Re: Capacity Loss on 2011-2012 LEAFs

Posted: Fri Feb 22, 2019 2:57 pm
by WetEV
Marktm wrote:Good information on fenix;
I'm not sure what Fenix is.

Building a battery isn't simple. BMS is complex, easy to get wrong. Water needs to be excluded from the batteries. Lots of current and voltages.

I've seen nothing to make me believe that Fenix has the engineering resources to make a safe, reliable battery pack.

Sure, I'd love to see third party supply of battery packs. But only if they are at least as good as the OEM packs.

Re: Capacity Loss on 2011-2012 LEAFs

Posted: Fri Feb 22, 2019 5:30 pm
by Marktm
Agreed - my hope is that they produce a higher quality, more heat resistant battery pack that also supports bidirectional energy through the CHAdeMO port in an accessible manner. Quite a tall order. My replacement Lizard battery pack is degrading at a 8% (plus) rate of ahrs per year. I've decided the $150 is worth the risk of their success.

Bysinger appears to be very dedicated to making this happen - but time will tell.

Re: Capacity Loss on 2011-2012 LEAFs

Posted: Wed Mar 13, 2019 5:48 pm
by Marktm
Update on my 2012 Leaf with a "Lizard" replacement battery in Nov. 2016. Lost the first bar today at about 53.3 amp-hours. About 9% AH battery loss per year. No quick charges, garage kept, battery temps in mid 80s to low 90s most of the summer.

The chart:
Battery log 3.13.19.jpg

Re: Capacity Loss on 2011-2012 LEAFs

Posted: Wed Mar 13, 2019 7:01 pm
by LeftieBiker
Is your garage un-cooled, partially cooled, or air conditioned? If un-cooled and you get breezes, you may want to park it outside, at least at night.