Post Your Battery Degradation Results

[Weatherman]

What is AHr and how do you measure it ?

AHr is "amp hour". It's the more standard way to measure battery capacity than kilowatt hours, since it's not voltage (a non-constant) dependent.

I use Turbo3's LEAF battery application on my Galaxy S4.

An assumption is made that a new 2011 or 2012 model year battery will start with about a 66.26 AHr capacity. The 2013s seem to start a little higher than that.

 

[LEAFfan]

What is AHr and how do you measure it ?

AHr is "amp hour". It's the more standard way to measure battery capacity than kilowatt hours, since it's not voltage (a non-constant) dependent.

I use Turbo3's LEAF battery application on my Galaxy S4.

An assumption is made that a new 2011 or 2012 model year battery will start with about a 66.26 AHr capacity. The 2013s seem to start a little higher than that.

Be careful. It depends on where the car is located. I've yet to see a new 2013 with anything close to that. Mine and one other one I've seen was only around 63 AH new, and now we are around 60 after just about 5 months.

 

[Weatherman]

I thought I saw someone with a 2013 report something like a 110% capacity with the LEAF battery app.

Of course, like you said, it's definitely location dependent. A 2013, kept in a refrigerator until delivered, is more likely to be the one showing the super high values.

 

[IraqiInvaderGnr]

A full 1,000 miles later and my 2013 Leaf has yet to lose any capacity since I first got this battery app. 67.36 ahr. It may have got to or above 95 a couple times but not for extended periods of time. Haven't drove it for very long when battery was that hot. Currently has 6,000 miles.

 

[LEAFfan]

I thought I saw someone with a 2013 report something like a 110% capacity with the LEAF battery app.

In AZ? That's highly unlikely.

Of course, like you said, it's definitely location dependent. A 2013, kept in a refrigerator until delivered, is more likely to be the one showing the super high values.

 

[Weatherman]

In AZ? That's highly unlikely.

Agreed. Same thing could, probably, be said for Texas and Florida, too, although this year has been a bit cooler than the past few in both locations.

 

[vrwl]

What is AHr and how do you measure it ? I have a GID meter and that tells me the GID count aand the kWh. Is AHr a better parameter than kWh or GIDs ?

thanks

Mkjayakumar, I have the app and the equipment to measure that info and I'd be happy to meet you somewhere in Plano or Frisco and do a quick check on your car for you, just PM me if you're interested

 

[mkjayakumar]

Thank you, Vicki. Is there a way I can buy this equipment online or somewhere?. I would like to track the results on a daily basis, as I charge to 100% (now only 230 Gids) and drive close to 68 miles a day/

thanks
Jay

 

[Stoaty]

Thank you, Vicki. Is there a way I can buy this equipment online or somewhere?.

You have a couple of good choices. Leaf Battery App (hardware and software, info in my signature) or the Leaf Dash Display (all hardware, my favorite):

http://www.mynissanleaf.com/viewtopic.php?f=44&t=12561" onclick="window.open(this.href);return false;

 

[TomT]

All you need is an ELM327 Bluetooth OBDII module, which you can find all over the net for about 15 bucks on up, and Turbo3's android app, which is free.

Thank you, Vicki. Is there a way I can buy this equipment online or somewhere?. I would like to track the results on a daily basis, as I charge to 100% (now only 230 Gids) and drive close to 68 miles a day/

thanks
Jay

 

[dm33]

A full 1,000 miles later and my 2013 Leaf has yet to lose any capacity since I first got this battery app. 67.36 ahr. It may have got to or above 95 a couple times but not for extended periods of time. Haven't drove it for very long when battery was that hot. Currently has 6,000 miles.

Folks shouldn't assume 2013s have higher capacity. I wish.
My 2013 reported 63Ahr at its highest (95%) after two weeks. Its down to 61.5 Ahr (92.82%) after 1.5 months and 2000 miles. It hadn't been hot yet when I leased the car. It has been in the 90s the last couple of weeks. I saw the battery temp hit 95 yesterday.

I wonder why such a wide range from 61-67 Ahr. That is huge. It would be a big deal is Nissan announced an improved battery with 10% more capacity, yet we're seeing that much range today with new 2013s. What gives? Could there be new chemistry that ends up in only some of the new 2013s? Or could some cars degrade that fast after production? I find it hard to believe mine could have naturally degraded that much that fast when it wasn't even hot. Maybe the dealer left it charged at 100% and let it sit there indefinitely.

Seeing how fast its dropped, I guess I'm glad I leased. But at this rate I wonder when I'll start losing bars. This already greatly affects our range and ability to go places. 10-20% extra range would be awfully nice.

 

[stjohnh]

FYI CROSS POST: NEW RELATED TOPIC-> subject: 2013 Low Battery Capacity AHr Battery Degradation

http://www.mynissanleaf.com/viewtopic.php?f=31&t=13776&sid=f7a49d1355a8b3fbb93bf1d9dd6498da#p314242" onclick="window.open(this.href);return false;

This new thread is particularly addressed to the issue of MY 2013 Leafs with low capacity from the start. Typically 60-62 AHr. From my first post of the thread:

"There have been several reports of nearly new 2013 Leafs with battery capacity readings in the 60-62 AHr range, and several with 66-67 range. A new Leaf ordinarily should have a capacity of 66 AHr. I know there are several battery threads, but none that specifically address this question. I have asked in other sections some of the battery experts and no one seems to have an explanation.

I would like people with 2013 Leafs to report their capacity (AHr) and if they actually have range loss. Other useful info is SOC at LBW. Anything else useful, as well.

I have 2 Leafs, a 2013 S and 2013 SV, both with capacity readings of 60.5-60.9. Both about 2 mo old (manufactured May 2013), both with about 1400 miles. Both run about 65 miles from 100% to LBW at 4mi/Kwh. Both show 18% SOC on the Leaf dash meter at LBW.

My range seems a bit low for a new Leaf, but not really as low as would be expected for a 10% capacity loss (66 AHr to 60 AHr). Additionally, real degradation is usually associated with a higher SOC at LBW (I would expect SOC to read in the 20-22% range at LBW for real degradation).

Anyway, this data is confusing and concerning, especially for those with a new Leaf and wondering if they got a lemon."

 

[wishboneash]

57.1 Ah. 393V@100% charge.
Max GIDs=236 (100%), 201 (80%) .. last week
12bars.
30,100 miles

Another 100% charge today (8/8/13)
Max GIDs=242

 

[dgpcolorado]

As of last week:

60.75 Ah ("Health" = 83.63)
213-215 Gid for 80%, ~258 Gid for 100%
12,100 miles, October 2011 manufacture date

I've had the P3227 update.

 

[vrwl]

As of Saturday, 8/10/2013:

2011 Silver Leaf SL with 100% charge:
AHr: 57.92
CAP: 88.30
Health: 76.20
GID: 237

My CAP% jumped from 86.32 to 88.32 (it went UP 2%) with the 100% charge. It has remained at the 88% level since then, after driving almost down to LBW on Sat and also driving a short trip on Sunday. But the Ahrs did not change. Go figure.

 

[TomT]

Per my sig below and to the left...

 

[GregH]

Looks like I can count Gids with 8 bits now :/
My 2012 is only 6 months old, 9800miles.. In the last few weeks I can count the number of hours over 70% SOC on my two hands and the pack temp has been generally on the low side of 6TB (ie ~23-31C).
Today 255 Gids at full 94.23% SOC 60.7128Ah 90.86%h
8/9/13 61.1982Ah 91.77%h
8/2/13 (262Gids) 61.5984Ah 92.52%h
7/6/13 61.8083Ah 92.92%h
...
4/6/13 66.0198Ah 100.79%h

 

[bradbissell]

2013 SV Built 3/13 Delivered 3/31/13

Date-------Ahr------%CAP----%SOC----Health----- GIDS----V Max---mv Delta---Max Batt Temp F---- Total Miles
6/24/13---66.850---102.363--97.100----------------------4.135----10.000-----80.000
7/22/13---67.050---102.210--96.900----103.090----283----4.125----9.000------79.500
8/1/13----66.150---100.838--96.900----100.910----284----4.132----13.000-----79.700------------4960
8/12/13---65.810---100.320--96.800----100.760----283----4.128----12.000-----68.900------------5443

 

[dm33]

2013 SV Built 3/13 Delivered 3/31/13

Date-------Ahr------%CAP----%SOC----Health----- GIDS----V Max---mv Delta---Max Batt Temp F---- Total Miles
6/24/13---66.850---102.363--97.100----------------------4.135----10.000-----80.000
8/12/13---65.810---100.320--96.800----100.760----283----4.128----12.000-----68.900------------5443

Wow. What kind of mileage estimate does the GOM report? Thats awesome. I'm sitting at 92% cap in my 2013 SV built 3/13. Would be nice to have another 10% capacity. Our GOM reports about 98 miles on a 100% charge. Does yours report 110 miles? We average 4.3mi/kwh.

 

[DaveEV]

Looks like I can count Gids with 8 bits now :/

Have you had the P3227 update?