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Re: The 40KWH Battery Topic

Posted: Fri Oct 18, 2019 4:09 am
by LeftieBiker
This is why I've gone to 6 month intervals for LeafSpy: you get the same trends, without having to say, every month, "Another drop..." :|

Re: The 40KWH Battery Topic

Posted: Sat Oct 19, 2019 6:56 pm
by alozzy
LeftieBiker wrote:
Fri Oct 18, 2019 4:09 am
This is why I've gone to 6 month intervals for LeafSpy: you get the same trends, without having to say, every month, "Another drop..." :|
This! I can't recall the last time I used LeafSpy, at least a year. Just ruins the enjoyment of the car, as there's absolutely nothing good you can do with the information. I charge to 80% most of the time, try to avoid charging when it's hot out, try to avoid deep discharging, otherwise I just drive it.

Same reason I wouldn't want to have a DNA test to find out my life expectancy - sometimes ignorance is bliss

Re: The 40KWH Battery Topic

Posted: Sat Oct 19, 2019 8:58 pm
by goldbrick
alozzy wrote:
Sat Oct 19, 2019 6:56 pm
LeftieBiker wrote:
Fri Oct 18, 2019 4:09 am
This is why I've gone to 6 month intervals for LeafSpy: you get the same trends, without having to say, every month, "Another drop..." :|
This! I can't recall the last time I used LeafSpy, at least a year. Just ruins the enjoyment of the car, as there's absolutely nothing good you can do with the information. I charge to 80% most of the time, try to avoid charging when it's hot out, try to avoid deep discharging, otherwise I just drive it.

Same reason I wouldn't want to have a DNA test to find out my life expectancy - sometimes ignorance is bliss
+1 I've been charging to 60% during the summer and now I'm a bit less careful but I still try to keep it under 80%. I did just check LeafSpy a few weeks ago and I'm at around 94% SOH but I was as low as 92% in the first 6 months before the BMS update on my 2017 S. My LBW still comes on at 14% and I have no noticeable loss of range The dash says I get 4.9 m/kWh so everything is just dandy for me. I've also stopped worrying about using the heat (S model....) and just make myself comfortable.

Switching to an EV does take some mental adjustments but I think at this point I'm over the hump and knowing my remaining range is taken care of subconsciously. Fortunately, I don't need to do long drives and there is FREE! charging all over town so that makes EV driving very low stress for me. I still like to take the occasional 'adventure' to see if I can make a longer trip in the Leaf but that is an exception. Most of my driving is just around town and the car has been perfect for that so far.

Re: The 40KWH Battery Topic

Posted: Sat Oct 19, 2019 10:05 pm
by LeftieBiker
I think I did get useful information from monthly LS readings - the first year. Now I use that info and just see if the drop decelerates with my car as it seems to with others after one year. I don't need monthly readings for that.

Re: The 40KWH Battery Topic

Posted: Sun Oct 20, 2019 3:41 am
by golfcart
I’ve only had the car for 7 months so in just checking monthly and posting for informational purposes. Plus there were some theories posted about large drops occurring every 3 months and I wanted to see if they hold water.

Re: The 40KWH Battery Topic

Posted: Sun Oct 20, 2019 5:35 am
by SageBrush
LeftieBiker wrote:
Sat Oct 19, 2019 10:05 pm
I think I did get useful information from monthly LS readings - the first year. Now I use that info and just see if the drop decelerates with my car as it seems to with others after one year. I don't need monthly readings for that.
.
I still read once a month to correlate transient SOH changes with battery temp. For long term degradation once a year readings are enough, and probably preferred to reduce seasonal noise. If fact, I think it better to take a baseline at one year and then yearly.

Re: The 40KWH Battery Topic

Posted: Sun Oct 20, 2019 5:37 am
by coleafrado
SageBrush wrote:
Sun Oct 20, 2019 5:35 am
LeftieBiker wrote:
Sat Oct 19, 2019 10:05 pm
I think I did get useful information from monthly LS readings - the first year. Now I use that info and just see if the drop decelerates with my car as it seems to with others after one year. I don't need monthly readings for that.
.
I still read once a month to correlate transient SOH changes with battery temp. For long term degradation once a year readings are enough, and probably preferred to reduce seasonal noise. If fact, I think it better to take a baseline at one year and then yearly.
Do you still have your LEAF? Might be useful to update your signature with newest data.

Re: The 40KWH Battery Topic

Posted: Tue Oct 22, 2019 3:59 am
by golfcart
I really don't think it matters much, check however often y'all see fit. A long term linear trend line will pretty much get rid of any seasonal noise anyways for our needs we are just looking for overall trends. I just think it is interesting to check, it really isn't a hassle. What does it take? 45 seconds to hook up the dongle and connect with the app?

Re: The 40KWH Battery Topic

Posted: Tue Oct 22, 2019 6:08 am
by DaveinOlyWA
golfcart wrote:
Tue Oct 22, 2019 3:59 am
I really don't think it matters much, check however often y'all see fit. A long term linear trend line will pretty much get rid of any seasonal noise anyways for our needs we are just looking for overall trends. I just think it is interesting to check, it really isn't a hassle. What does it take? 45 seconds to hook up the dongle and connect with the app?
Well, normally I would agree but this is hardly a normal pack. Leave it Nissan to be a bit strange.

Re: The 40KWH Battery Topic

Posted: Tue Oct 22, 2019 9:29 am
by danrjones
DaveinOlyWA wrote:
Tue Oct 22, 2019 6:08 am
golfcart wrote:
Tue Oct 22, 2019 3:59 am
I really don't think it matters much, check however often y'all see fit. A long term linear trend line will pretty much get rid of any seasonal noise anyways for our needs we are just looking for overall trends. I just think it is interesting to check, it really isn't a hassle. What does it take? 45 seconds to hook up the dongle and connect with the app?
Well, normally I would agree but this is hardly a normal pack. Leave it Nissan to be a bit strange.
For sure.

The whole 3 month adjustment thing is odd. It may be meaningless to have the extra data in the LONG run but in the short run its interesting to see what their software is doing.