evnow wrote:Sorry, the first two are just not good enough to figure out small capacity differences (like mine where the model predicts 8%, and I think it is around 2%). I doubt the dealer will test my battery ...
It's always worth asking, I had friends that persisted, and got the number they were looking for. This is just a pure guess, but I would think that your battery could easily be 4-5% down without you noticing. Gids cannot be fully trusted in either cold and hot weather. Be it as it may, we are splitting hairs here. We already know that the battery will do fine in Seattle, but there will be a significant and noticeable hit after the first year in southern climes. And this includes places that are not deserts by any definition: Houston, Dallas, Los Angeles, etc.
evnow wrote:I didn't say the model is 150% inaccurate. I said it has a 150% error in what it predicts in terms of GID in my case. Sorry, if you don't like facts.
I do like facts as much as anybody. Unfortunately, we don't have access to a lot of accurate information, as I acknowledged above. What I don't like at all is your attitude, which seems to permeate your recent writing. If I may, I would recommend a little exercise in empathy before penning your next post. You might be surprised at the results.
evnow wrote:I think we should refrain from "predicting" battery capacity until we have better data. I'm no Nate Silver, but even I know you shouldn't make a model with so little data.
And that's where we disagree once again. Had you read the posts on the forum from this summer, you would understand how we ended up here, and why we even tried to put something together, given the data we have. You would not be the first or last EV advocate from a cool climate second-guessing the work of others, who might be more affected by battery degradation than you appear to be.
Yes, ideally, Nissan would furnish this data, and there would be more transparency in terms of battery life, and what degradation can be expected based on climatic influences and usage patterns. Although we might get there eventually, it still appears to be long way off. We cannot get even some basic information such as battery replacement costs out of them, which is one the high priority items requested by the owner community.
evnow wrote:I sure appreciate everyone who has worked on this problem. But that doesn't mean it should not be questioned. Finally, we all have to be reality-based.
Certainly, and given the community on this forum, you can be certain that things have been approached thoughtfully and were debated at great length before.
While on the topic, let me remind you that you were one of the people claiming that your Leaf was habitually getting 100 miles on a charge in the summer, without actually going the distance. That's not a very scientific approach, which was pointed out to you before, and I don't think we ever agreed on that. We now know that the energy economy gauge cannot be fully trusted either, and most new owners have difficulty driving below the low battery warning. If the 2013 Leaf had improved efficiency and instrumentation, perhaps we will see the membership in the 100-mile club