SierraQ wrote:EdmondLeaf wrote:leiko49 wrote:I observed two days ago, while I was driving, during my first mile on my journey to work, I lost a bar (first one), was down to 11 bars, and then it returned about a mile later, and I currently have 12 bars.
Is this common?
I have 9K miles on my Leaf.
This happened to RickS from Phoenix he got back 12 battery capacity bar for short time, but after few weeks bar gone for good. Can you provide more details where you located and where car is parked day and night. Thank you
Interesting. I wonder how the capacity gauge makes its calculations?
- It seems to be based on readings from some set of sensors which may not be consistently calibrated--one of the Leafs taken for testing in Arizona was re-calibrated and bars came back.
- Possibly can be reset although reports of such may just be due to calibration corrections.
- Bars can come and go as reported above. So it is not based on some aging algorithm that decays but rather live analysis.
There has been speculation that bars may come back when the weather cools in a month or two. However, the capacity meter seems to offset for cold temperatures otherwise some of us would have seen temporary drops in winter. So I don't think the meter measures absolute, instantaneous capacity. Perhaps then it projects capacity in ideal conditions, which means it is making some estimates. (A Leaf gauge that makes estimates? How shocking!) If that is true then likely we will not see any bars come back when the weather cools.
Stoaty wrote:I believe there was one similar report, but I am not able to find it (yet). Probably means you are about to lose a capacity bar. Let us know when it happens, report to Nissan and get a case number, and provide info for the Wiki:
Stoaty wrote:Edit: Found it: viewtopic.php?f=30&t=8802&p=221281&hilit=+capacity+bar#p221281
philaphonic wrote:Thanks Stoaty! And the graph you did on that page is very interesting, too. I would fall near the lower end in terms of miles driven per month, and it seems I will soon be able to put a data point on it that fits the trend nicely. Sigh.
philaphonic wrote:FYI, I searched on "capacity reappear" and got nothing so I will assume no one has had this happen yet (life is too short to read through 300+ posts on the early capacity loss issue).
Yesterday morning, after charging to 100% overnight, with odometer at about 9450 miles and < 15 months of ownership, I saw what several others in hot climates have been seeing: the top capacity bar on the battery gauge was unlit. Yet after driving for a few miles, I looked down at the dash and saw it was back on! And it has stayed on, so far. Am I on the cusp? When I took the Leaf in for its 1 year service/battery check back in May, the battery got 5 stars and from then on I noticed the estimated max range on the guessometer was less optimistic than before,which I assumed was due to a software update. E.g., last August a 100% charge would result in a guess of about 115 mile range, and now it's guessing 98 miles. That's about right for a capacity bar loss, but not if the software is making a less wild guess.
I mostly charge using level 2, 5 nights a week at 80%, 2 nights a week to 100%.
Reporting from Houston,
Phil A. Phonic
Am I on the cusp?
DaveinOlyWA wrote:philaphonic wrote:Am I on the cusp?
you might be. how hot has it been? what is your normal charging habits? parked inside or out? did you have any regen circles available when you first started out?
philaphonic wrote:My capacity bar loss appears to be permanent now. I'll be reporting this as suggested in the wiki soon and making an entry in the spreadsheet.
Also, on Friday, I managed to drive 64 miles with remaining miles on the GOM of 7. Dash reported efficiency of 4.5 m/kwh.