golfcart wrote: ↑Tue Sep 17, 2019 4:08 amI haven't seen that big 3 month drop. I had a decent sized drop from May to June after getting the car in mid-march but no corresponding August to September. I'll keep checking every month and post my results.
Date SOH% SOH %Chg Ahr Ahr %Chg TempF
3/15/19 97.47 -2.53% 112.52 -2.53% 69.1
4/15/19 97.41 -2.59% 112.45 -2.59% 75.2
5/15/19 97.34 -2.66% 112.37 -2.66% 82.2
6/15/19 95.38 -4.62% 110.11 -4.62% 90.8
7/15/19 94.98 -5.02% 109.64 -5.02% 97
8/15/19 94.63 -5.37% 109.24 -5.37% 101.8
9/15/19 94.41 -5.59% 108.99 -5.59% 92.2
I haven't seen that big 3 month dropDaveinOlyWA wrote: ↑Tue Sep 17, 2019 6:39 amgolfcart wrote: ↑Tue Sep 17, 2019 4:08 amI haven't seen that big 3 month drop. I had a decent sized drop from May to June after getting the car in mid-march but no corresponding August to September. I'll keep checking every month and post my results.
Date SOH% SOH %Chg Ahr Ahr %Chg TempF
3/15/19 97.47 -2.53% 112.52 -2.53% 69.1
4/15/19 97.41 -2.59% 112.45 -2.59% 75.2
5/15/19 97.34 -2.66% 112.37 -2.66% 82.2
6/15/19 95.38 -4.62% 110.11 -4.62% 90.8
7/15/19 94.98 -5.02% 109.64 -5.02% 97
8/15/19 94.63 -5.37% 109.24 -5.37% 101.8
9/15/19 94.41 -5.59% 108.99 -5.59% 92.2![]()
Holy sheepdip! Hate to see your definition of a big drop...
I would put nothing into these readings. I fear that Nissan has changed BMS programing to thwart LEAF Spy. FYI; the adjustment doesn't always go down.
DaveinOlyWA wrote:
No rush. Adjustments come every 90 days. You can simply wait till Sept. I will say a .15-.25% loss in July with same for August...
Which one doesn't always go down?
My SOH and ahr has either stayed the same or went down EVERY TIME except my July adjustment when they went up gaining 1¼%.danrjones wrote: ↑Tue Sep 17, 2019 7:18 amWhich one doesn't always go down?
My Hx doesn't always go up. It just ticked down very slightly the last two days. SO FAR my SOH always has gone down.
But I agree, its all so artificial, I think its a BMS software thing more than real battery degradation.
It did cause me to ask if Nissan, or any company for that matter, has the right to artificially reduce your battery life.
I pointed out apple was caught doing essentially that to phones.
I have a nice plot of my SOH including the two drops but I guess I can't directly post it.
It also makes me wonder if the SOH we are all watching in leafspy is even a good measure of the battery health bars in the 2018/2019s.
I tried finding the battery health bar in the the manual to see what they said about it and actually couldn't find it. It seems it was only called out by name in the warranty.
I have this picture in my head of some tech guy as Nissan sitting around laughing at us for watching leafspy every day.LeftieBiker wrote: ↑Tue Sep 17, 2019 12:50 pmWhich one doesn't always go down?
With previous generation battery packs, the SOH will go up occasionally, like after a QC session. We do have one lonely instance of a 40kwh pack SOH going up - a little, once.