Big portions of the south west though really need that cooling. I had stretches this summer where my battery didn't get below 100F even late at night or early morning. Nobody really knows yet what that will do to 2018s and 2019s, but it can't be helpful.Titanium48 wrote: ↑Wed Oct 23, 2019 9:18 pmNot everyone would benefit from battery cooling. If you don't live in a place with hellishly hot summers and you don't use your Leaf for long road trips with multiple QCs, the battery doesn't overheat. Mine never went over 6 bars last summer, and spent all but a few days at 5.
On the other hand, a battery cooling system could become a more effective battery heating system in winter, which would be useful.
That isn't clear, longer term. There are Li-ion batteries that have full life at 100C and can be wave soldered onto boards at 270C. Sure, only tiny volumes are available, and can't be scaled to automotive sizes. Yet.
What exactly does "fine" mean? From the data people are posting here, 2018's seem to be approaching 7-10% loss. The loss may indeed be irregardless of heat - it could be completely based on age. My battery SOH seems almost the same as other 2018's here but they have 10x the mileage. But either way, who defines what "fine" means? Tesla owners are reporting 100k miles on a model 3 with only 2.5% degradation.OrientExpress wrote: ↑Thu Oct 24, 2019 7:48 amThe 2018 and 2019 cars have a completely different battery chemistry that is much more durable and heat tolerant. As long as the average temp is between the 2nd blue and 1st red bar, the battery will be fine.
Granted the current design has been going strong for almost 4 years now, (2 in hot weather testing at the Nissan Arizona proving ground) and two in the hands of customers, there is yet to be any negative reports on the durability of the new design.
The challenge is that most are still comparing the new battery's performance using the metrics from the earlier designs.
Or are you saying that the numbers we are watching of Leafspy are meaningless? That our 2018 batteries SOH is actually still near 100%?