You can estimate the battery capacity by pressing the leaf and going to the "energy details" screen with the pie chart. If your last charge was a full charge, you can add up the three percentages (Driving and Accesories, Climate Setting, and Battery Conditioning) and divide by 100 to get the fraction of the battery that has been used. This screen also has "Energy Used" in kWh. Divide the "Energy Used" by the fraction to estimate the usable battery capacity in kWh. You will probably get a more accurate number if you wait until the battery is at least 40% used. In summary here's an equation:
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(battery capacity in kWh) = 100 * (Energy Used) / (Driving and Accessories + Climate Setting + Battery Conditioning)
Have you tried using the 'Math Method' mentioned above to get a battery capacity number?CarlinOC wrote:......
Up until February this year (27 months & ~17,000 miles) I was consistently fully charged for 86 miles +or- 2.
Then, I noticed I was only getting ~76 +or-2. It was not gradual decline, but rather a step down. ....
No, but I will so I can make some comparisons.NORTON wrote: Have you tried using the 'Math Method' mentioned above to get a battery capacity number?
2 seasons is Orange County, California. Sometimes cool and wet (although not much wet for the last 5 years). Sometimes hot & dry.NORTON wrote: Are there not seasons where you live? I NEVER get 'consistent' GOM numbers.
For example: I have the slow or fast commute route, I have drastic seasonal temp changes, sometimes I only go for 80% at DCFC stations, sometimes I 'Head out on the Highway, Lookin' for Adventrue', just an old fashioned Joy Ride,, only for free!!
Fair enough. I have been using the estimated mileage range in the blue ball on the left and the trip odometer to keep battery anxiety in check.NORTON wrote: I see seasonal trends but rarely see the same GOM number twice.
The GOM is not meant to be a way of measuring battery capacity.
Thanks. Glad to hear all is well. As with any new technology and being early adopters, I think we will have very different experiences. I appreciate you sharing yours.NORTON wrote: I'm at +18k miles and all is well with my battery capacity!!
Here are my average monthly full-charge Blue Ball GOM numbers. We had a cold winter ( at least for Central California) where I live.fox wrote:Can you give us an update on this, I never see more than 75 miles in the blue ball
I have a 2015 Spark EV bought new as a super-leftover at the end of Nov 2016. I live in CT and thus the car has yet to be driven under anything like ideal conditions for maximum range. I have only seen 62-74 miles of range on the GOM (except during one short winter reprieve when it read 78). I too was initially was concerned about battery capacity degradation and how its long idle period may have effected it. However, calculations of the battery capacity gave values between 17.2 and 18.0 so all appears to be well. The main reasons for my low GOM range are weather and a largely fast highway commute. One possibly surprising effect on range I found recently was due to driving highway speeds in very heavy rain. A quick Google search revealed that very wet roads apparently can increase rolling resistance by up to 40%! Therefore, if one lived in a relatively wet area your GOM could be down for that reason also.fox wrote:Can you give us an update on this, I never see more than 75 miles in the blue ball