Yup, and it appears my battery arrived from the dealer already 15% degraded. About a month after getting the car I purchased one of Gary's boxes because I suspected something was wrong (was not getting the range others were reporting) and found I was only reading 239 after a 100% charge despite still having 12 bars on the capacity meter. Phil's confirmation of the gid or watt-hours unit being a standard across all cars (80wh) proves it. Going to be fun trying to tell that to the dealer... Interestingly, as I used the car, my capacity seemed to creep up (despite ouside temperatures going south). I have, in the last month, been getting as high as 256 on a 100% charge.Herm wrote:Nissan seems to be confident on the durability of the batteries.. hopefully they dont pull a Honda and reprogram the limits after 3 years to reduce battery degradation.lukati wrote: For me the important information coming from Phil's data is the fact that the BMS protects only 2% capacity at the bottom and ~5% at the top. Unlike the Prius NiMH battery that Toyota won't let you abuse, your use pattern on the LEAF will truly affect the longevity of the pack. We knew that going in, now we have the numbers to prove it.
It appears we finally have our fine grained battery wear meter..
garygid wrote:Yes, some folks started calling the "unknown-units" value (0 to 281) a "Gid" after my "garygid" forum handle. Then, the "soc" Meter might be a Gid-Meter.
Instead of dividing, you should multiply (kWh X miles/kWh = miles).TomT wrote:This would be handy for estimating your available range since you would simply need to mentally divide that number by your displayed M/Kwh to get your remaining range in miles...
I wonder if it came from the factory this way, which would seem highly unusual, or if there was some other factor at play. Admittedly this is a bit off-topic, but I do fear that perhaps some inept dealers have left their LEAFs sitting at 100% charge for weeks or months, which would actually be a violation of the car's warranty due to the battery degradation it would cause. I'd only be concerned about demo cars, as well as "orphans" sitting on the lot for extended periods due to the dealer being unwilling to budge on price. Before purchasing such a LEAF, it would be ideal to have a way of checking the battery. I wonder if obtaining the number of gids after charging to 100% and allowing four extra hours for balancing would be good enough.TickTock wrote:it appears my battery arrived from the dealer already 15% degraded
linkim wrote:Instead of dividing, you should multiply (kWh X miles/kWh = miles).TomT wrote:This would be handy for estimating your available range since you would simply need to mentally divide that number by your displayed M/Kwh to get your remaining range in miles...
It's only been referred to SOC in the relationship of what is available to the vehicle operator. To be honest, I don't want data displayed that doesn't reflect available energy. So far, the Gid count seems to be the best SOC that we have for this purpose.Ingineer wrote:
Either way, I can assure you what you are calling SOC, Nissan is calling stored watt-hours.
It's not going to work well with the current data. It doesn't add up.TomT wrote:... simply need to mentally multiply that number by your displayed M/Kwh to get your remaining range in miles... .
TonyWilliams wrote:It's not going to work well with the current data. It doesn't add up.TomT wrote:... simply need to mentally multiply that number by your displayed M/Kwh to get your remaining range in miles... .
I've said this several times now, but I don't want people seeing 281 Gids, then multiplying by 80, getting 22.5kWh, then multiplying by the dash or console miles/kWh (let's say 4.8), and thinking they'll drive 108 miles. With a 70F battery, we already know that distance will be closer to 100.
That is why the previous discussions were centered around 70 and 75 watt hours per Gid. That data more accurately reflects distance traveled from Gid count.
There is a significant difference in this 80 value per Gid, and what we can actually use. We do not have Gid data at exceptionally low temps to see if it does adjust for temp. I believe it will do so for degradation.