axehandler
Posts: 1
Joined: Fri Sep 27, 2019 7:55 pm
Delivery Date: 28 Sep 2015

Re: How to Check Battery Capacity, Degradation and Range

Fri Sep 27, 2019 8:06 pm

Hi, I finally got around to connecting my OBD2 dongle with Leafspy. I have a 2015 Nissan Leaf and figured I would ask you guys if the battery is in good shape or not. When we bought it 2 years ago, the GOM used to report 108 miles of range (ha!) but really only gets about 85 miles with normal driving - and that is close to what the GOM will typically report these days.

We live in Pacific NW and have fast charged the car twice, it only gets driven about 20 miles a day 5x a week. I don't know if I've ever balanced the batteries... or at least it's probably been awhile since we left it at 100%. I try to keep the battery between 30 and 80% charged.

The car is reporting 12 bars, 43,294 miles and was sitting at 94% charge on the dash when I took this - what does this info tell me?

Image

DougWantsALeaf
Posts: 995
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: How to Check Battery Capacity, Degradation and Range

Thu Oct 03, 2019 6:24 am

Plus owners

What does your GOM usually read when fully charged. My car is about 4 months old, but the GOM still shows 280 at full Charge. I had expected the number to settle down a bit more this far into the car (4K miles). September average efficiency was 4.3, dragged down by some higher speed and rainy freeway runs. 4.3X59kW = 253 miles. I did. Track my last “tank” and after 180 miles (local with small stints of highway)I had about 70 remaining on the GOM (+the reserve), which is a ballpark 270 to empty.

Are others continuing to see the GOM

I have 500 miles to drive tomorrow, so will give it a good work out and will report back on the drive. If I can leave Sturgeon bay with a full charge, I may try to do the 90km/h test that Bjorn does on the cars to compare, just with higher inflated tires and minimal pro pilot.
2019 SV Plus Silver
2013 Leaf SV
100 Mile Club Member (Number 87)
Max distance on 13 Leaf: 120 miles
Max distance on 19 Leaf: 242 Highway 4.5 miles/kWh (4.9 KWh remaining)

frontrangeleaf
Posts: 46
Joined: Sat Aug 03, 2019 10:07 am
Delivery Date: 08 Jul 2019
Location: Denver Area

Re: How to Check Battery Capacity, Degradation and Range

Thu Oct 03, 2019 6:49 am

We almost never fully charge. That said, we’re seeing about 250 implied.

I probably drive in a more spirited manner than many here. The Leaf plus is a lively, fun car. No reason not to.

Avg 4.1 mi/kWh. Give or take.
Empty-nesters - NW Denver-Boulder Area

2019 Leaf SL Plus
2015 Audi Q5 TDI
2007 BMW Z4 3.0Si
2012 VW GTI

Lothsahn
Posts: 488
Joined: Thu Apr 05, 2018 4:35 pm
Delivery Date: 04 Jan 2018
Leaf Number: 007797

Re: How to Check Battery Capacity, Degradation and Range

Thu Oct 03, 2019 9:08 am

axehandler wrote:
Fri Sep 27, 2019 8:06 pm
The car is reporting 12 bars, 43,294 miles and was sitting at 94% charge on the dash when I took this - what does this info tell me?

Image
The SOH is 86.84%, which means you're about to lose your first bar (~85% SOH). Overall, your battery appears healthy, as the cells are within 20mv of each other. If you want to do a full analysis, you could run the car to the Very Low Battery Warning (--- on dash) and get that same screenshot. That will show you which cells are the weakest. However, unless you're planning on opening up the battery pack and replacing them, there's not really a good reason to do that.

Anytime you do a charge to 100%, the on board charger in the Leaf will automatically balance out the battery cells. It's not something you need to do.

Because your SOH is 86.84%, this means that you've lost 14.16% of the battery capacity. Given you're in the Pacific NW with a cool climate, I suspect the car's previous owner lived somewhere hotter to cause that range loss. You could continue to track your SOH on a monthly basis to see how your battery is degrading. Keep in mind, however, that SOH varies with temperature and seasonal fluctuations, so really, you can only compare SOH on a yearly basis. Do not start freaking out if the SOH drops or rises by a few percent as it gets cold, as that trend may reverse in the spring.

In short, your car is healthy and doing well, with roughly a 15% range lost from when it was new. Drive and enjoy the car, and expect with a 20 mile commute to get at least another 8 good years out of it (probably much longer). I was able to make a 20 mile commute in the winter with the heat blasting with a 55% SOH battery pack.
2011 Silver SV, purchased 2018, lives in Missouri (previously in CA)
LeafSpy Pro + BAFX Products OBDII dongle
Battery swap 2019/04/24 (87% SOH, 12 bar)

alozzy
Posts: 1392
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: How to Check Battery Capacity, Degradation and Range

Thu Oct 03, 2019 8:33 pm

@axehandler FYI, I looked up your LEAF's original sales sticker, using the trick with the CPO website:

https://1drv.ms/b/s!AjONM_UrXWS8gadzgyH ... A?e=ufcVKk

Looks like it was first sold in Portland, OR by Rustom Nissan of Portland. I'm surprised that it's already almost down a capacity bar as it seems likely that it spent it's entire life so far in the PNW.
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV :D

Nekton
Posts: 1
Joined: Sat Nov 09, 2019 7:44 am
Delivery Date: 09 Nov 2019
Leaf Number: 063833

Re: How to Check Battery Capacity, Degradation and Range

Sat Nov 09, 2019 8:00 am

Hey, I'm new here and new to EVs.

I recently bought a 2017 Leaf and today I checked the battery's health.

Leafspy states my SOH is 92,52%. That's nice and all, but the weird thing is my Leaf's missing the last battery health bar.

From what I've read on this forum and elsewhere is that the last bar represents 15%. So... Somethings not right here. If my SOH is over 92%, I should have all bars visible, right?

I might have misunderstood something, appreciate any guidance from you guys 😇

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