bmw
Posts: 15
Joined: Mon Apr 23, 2018 2:45 pm
Delivery Date: 23 Apr 2017
Leaf Number: 303598
Location: St. Louis MO

Re: Please post your latest June 2018 30kWh battery software upgrade feedback here

Sun Oct 21, 2018 12:59 pm

I had the software updated on my 2017 leaf on 10/2/18. At that time I had the leaf for just under 18 months with 10,181 miles on the odometer.

Before the update SOH 88% , HX 82.43
After update SOH 93.64,% HX 82.79

A day later on 10/3/18 after 100% charge and a 70 mile drive
SOH 95.13, HX 83.4

On 10/20/18 SOH 93.34, HX 80.01 mileage 10,710

What I have noticed is that SOH does not fluctuate as much as it did before the upgrade. Before update, the SOH would change as much as 2% after a full charge and several longer drives. Other than the first day after the update, the variation is is less than 0.5% day to day. The SOH has stayed reasonably constant, and surprisingly the value of HX has seen a small steady decline.

I am not sure what all of this means, but it appears that battery degradation may not be that much better than before the software update.

bmw
Posts: 15
Joined: Mon Apr 23, 2018 2:45 pm
Delivery Date: 23 Apr 2017
Leaf Number: 303598
Location: St. Louis MO

Re: Please post your latest June 2018 30kWh battery software upgrade feedback here

Wed Dec 12, 2018 10:35 am

I am sorted surprised that there have not been any additional posts describing experience since having the battery software update since I last posted. I would really like to see what others have experienced.

It has been a month and 1/2 since I had the software update was installed on my 2017 Leaf. Other than going from 88% SOH to now around 93% the biggest change that I have noticed is the the SOH reported by Leafspy does not change with the type of driving or charging. For about a month the SOH settled in at 93.33% It had been as high as 95% after a long drive. In a little over a month it has decreased to 93.08% and has been amazingly consistent no matter how I drive or charge. The other thing that I have noticed is that the Hx value has continued to slowly decline. It is now at 79.5% having been just above 81% after the software update. By the way, the GOM is just as inaccurate as it was before the update.

GaleHawkins
Posts: 64
Joined: Sat Oct 26, 2019 5:24 pm
Delivery Date: 15 Oct 2019
Leaf Number: 311365
Location: Murray KY

Re: Please post your latest June 2018 30kWh battery software upgrade feedback here

Mon Dec 02, 2019 10:21 am

VAB5 wrote:
Tue Aug 28, 2018 2:05 pm
Got mine done today.

Current Odo: 8,292

Pre-Reprogram
Battery health bars: 9/12
AHr: 52.91
SOH: 66.57%
Hx: 65.77%

Post-Reprogram
Battery health bars: 12/12
AHr: 68.27
SOH: 85.90%
Hx: 65.75%
Since our 2016 SL that we recently purchased at just under 22K miles has similar reading as you had before reprogramming I to see something similar after ours is reprogrammed. Have you checked your battery stats lately?

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