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Re: Post Your Battery Degradation Results

Posted: Thu Sep 06, 2018 6:49 am
by MrNicG
marcelg wrote:
MrNicG wrote:
WetEV wrote:
Where are you located? What is the local climate like? What kind of driving do you do? What kind of charging?
I live in central Florida. The average temp in my area is about 85 degrees. Humidity is normally high. I normally drive fairly conservatively. My commute is 10 miles each way, with a top speed of about 45MPH. It is almost an equal mix of back streets, going 35 and boulevard going 45. According to LeafSpy, the SOH seems to only drop when it is parked, or perhaps when it is started after being parked. I charge with the stock Level 1 EVSE.
I started using a trickle charger for the 12v when the car is parked and I am going to monitor that for a while and see if it helps. Also, I was wondering if the method of starting the car makes any difference, so instead of single press to start, I am pressing once to power up and then pressing the second time to switch into Go mode.
Do you regularly charge the vehicle over 80%? From what I've read, high temps + high state of charge is a primary cause of accelerated degradation. Batteries that are kept between 20-80% get many more cycles than those that are used 10-100%.
I almost always charge it to 80%. I'm not really sure it matters though. I think it's sort of a futile effort. While it does cool down a bit at night in my region, the daytime highs of 90-95 right now are probably just killing it during the day. We have a multilevel garage at work and it keeps things a lot cooler during the day. My battery sensors normally hover around 84, which may still not be good enough to keep the degradation at bay.

Does anyone know if Nissan gives you any money off the new battery if your old battery still has some life left?

Re: Post Your Battery Degradation Results

Posted: Mon Oct 08, 2018 11:03 am
by BuckMkII
My latest readings are:
ODO 50999
AHr 54.5
SOH 83.3% (lowest fluctuation ever was 82.8% a couple of weeks ago)
Hx 77.8%

I mostly L2 charge to 80%. Anyone want to make a fearless prediction about the date I lose bar 11?

Re: Post Your Battery Degradation Results

Posted: Thu Dec 12, 2019 11:19 pm
by baumgrenze
We took delivery of our 2012 Leaf in December 2011.
Today I checked noted the odometer at 33,975.
We mostly charge to 80% at 220V at home (Blink from the EVSE Program.)
We live on the San Francisco Peninsula (Palo Alto) near the Bay.
We seldom use the AC and/or heater but do have to do defogging in the winter. On cold days we heat the steering wheel.
Most of our trips are short, local, shopping trips.
We have not yet lost any bars on the dash. With an 80% charge we are 'down 2 bars.
We are still running on the original 12V battery.
Is there a chance that it will still start the car in February 2020?
If my numbers are correct, since 12/1/19 we've driven 198 miles and used 37.98 KWH, so we got 5.2 mi/KWH
Our biggest expense has been replacing tires due to road damage.
We are moving cross country. I don't believe it will be worth the cost to ship the car. Once we are settled we envision wanting to drive beyond the 80 mi range of this Leaf. We will probably lease a hybrid with a substantial traction battery range.
All in all our Leaf has been good to us.

Thanks for all the help I've received from this forum.
baumgrenze

Re: Post Your Battery Degradation Results

Posted: Thu Dec 12, 2019 11:44 pm
by cwerdna
baumgrenze wrote:
Thu Dec 12, 2019 11:19 pm
We took delivery of our 2012 Leaf in December 2011.
Today I checked noted the odometer at 33,975.
We mostly charge to 80% at 220V at home (Blink from the EVSE Program.)
We live on the San Francisco Peninsula (Palo Alto) near the Bay.
We seldom use the AC and/or heater but do have to do defogging in the winter. On cold days we heat the steering wheel.
Most of our trips are short, local, shopping trips.
We have not yet lost any bars on the dash. With an 80% charge we are 'down 2 bars.
The bolded part sounds unlikely.

Are you looking at the right bars? Count how many capacity bars you have, including the red ones. See https://mynissanleaf.com/viewtopic.php?p=436255#p436255. http://www.electricvehiclewiki.com/wp-c ... bars_s.jpg is an example of a fully charged 3 bar loser (9 capacity bars left).

If you wish to post a pic, you can upload it to places like https://imgur.com/. It would need to show the capacity bars.

Re: Post Your Battery Degradation Results

Posted: Fri Dec 13, 2019 11:28 am
by baumgrenze
Thanks cwnrdna,

Here is an Imgur link:

https://imgur.com/4bqA9WO


baumgrenze

Re: Post Your Battery Degradation Results

Posted: Fri Dec 13, 2019 4:01 pm
by goldbrick
You have 11 of 12 bars, so the car has lost 1 bar. That also jives with the 80% SOH on LeafSpy. The next bar will probably drop at around 77-78% SOH.

Re: Post Your Battery Degradation Results

Posted: Fri Dec 13, 2019 11:54 pm
by baumgrenze
Hello Goldbrick,

I cannot tell 'who' the 'you' is to whom you are replying?

I doubt it is me, baumgrenze, because my Imgur image shows only 10 bars because the car was only charged to 80%.

Also, I did not report any Leaf Spy results.

thanks,
baumgrenze

Re: Post Your Battery Degradation Results

Posted: Sat Dec 14, 2019 12:38 am
by LeftieBiker
baumgrenze wrote:
Fri Dec 13, 2019 11:54 pm
Hello Goldbrick,

I cannot tell 'who' the 'you' is to whom you are replying?

I doubt it is me, baumgrenze, because my Imgur image shows only 10 bars because the car was only charged to 80%.

Also, I did not report any Leaf Spy results.

thanks,
baumgrenze

He was mistaken about a LeafSpy screen snap, but you do, in fact, have 11 capacity bars according to the photos. Those don't vary with degree of battery charge. That means you have between 80% and 85% of the original capacity remaining. That is amazingly good for a 2012 leaf with the original battery.

Re: Post Your Battery Degradation Results

Posted: Sat Dec 14, 2019 3:21 am
by cwerdna
LeftieBiker wrote:
Sat Dec 14, 2019 12:38 am
He was mistaken about a LeafSpy screen snap, but you do, in fact, have 11 capacity bars according to the photos. Those don't vary with degree of battery charge. That means you have between 80% and 85% of the original capacity remaining. That is amazingly good for a 2012 leaf with the original battery.
Agreed. This is probably one of the least bar losses I've heard of for a built in 2011 ('12) Leaf residing in the US.

If baumgrenze has Leaf Spy or access to it, I would be curious to know the SOH and Hx.