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Battery degradation

wolfpet

Member
Aug 5, 2013
163
54
ON, Canada
Thanks everyone! I realize that the data is limited, but I feel it's sufficient to start drawing some charts. It's also consistent with the data I have seen from our global community. Here's what we have so far:

Battery_Degradation.png
 

mnx

2013 P85
May 6, 2009
2,286
10
Ancaster, Canada
I seem to be on the low end of the curve, although I probably have one of the higher Wh/km as well. (ie. more charge cycles per km driven) Fwiw Mine is a P85 from February 2013.

54,806km - 224Wh/km - 356km rated at 90% (this dropped from 361km in the past month. I left it set at 50% and plugged in while I was away from home for a week)
 

mknox

Well-Known Member
Aug 7, 2012
10,103
1,894
Toronto, ON
I seem to be on the low end of the curve, although I probably have one of the higher Wh/km as well. (ie. more charge cycles per km driven) Fwiw Mine is a P85 from February 2013.

54,806km - 224Wh/km - 356km rated at 90% (this dropped from 361km in the past month. I left it set at 50% and plugged in while I was away from home for a week)

Still better than my 349 km @ 90% (approx 88,500 km on the clock)
 

RAM_Eh

Member
Dec 10, 2013
551
326
Toronto ON
I seem to be on the low end of the curve, although I probably have one of the higher Wh/km as well. (ie. more charge cycles per km driven) Fwiw Mine is a P85 from February 2013.

54,806km - 224Wh/km - 356km rated at 90% (this dropped from 361km in the past month. I left it set at 50% and plugged in while I was away from home for a week)

My car has 54000... km also but purchased in December 13. As stated below I have 362 @ 90%. May be the age too.
 

clea

Member
Mar 16, 2011
836
18
Laval, Quebec
mine has 50K kms purchased March '13 ... I still have 372 rated kms @90%. that's if i check immediately after charging ends. It can leach kms pretty quickly tho so if i leave later than usual in the morning it will drop to something like 368 rated km by 11h.

ps I charged to 100% for a trip to Ottawa on the weekend and i got 412 rated km
 
9000km on the clock, P85D, originally 368 rated km at 90%, now down to 366 rated km at 90%. I noticed both times I went away for 2 weeks and the car sat plugged in, I lost 1 km of rated charge. Might just be a coincidence, next time I go away for a week I'm not going to plug it in and see what happens. I realize that my results will not be causal or conclusive.
 

hiroshiy

Active Member
Moderator
Apr 6, 2013
2,417
2,029
Tokyo, Japan
Thanks everyone for the additional data points! As your odometer reading goes up please feel free to post again. Every bit of data counts. Here's the updated graph:


range2.png

Hi, I wonder if you used my data (I can see one lowest data on the graph). If so please update 346km with 369km, as my car is JP spec and the Rated range is different. 346 JP rated = 346 x 320 / 300 = 369 US rated.

In my case (same as EU):
@100% 385km or 410km/256miles in US Rated
@90% 346km or 369km/230miles in US Rated
After 24000km
 

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