Large Tesla Battery

brulaz wrote:
Have been reading GreenCarReports for a while now.

From their pages, it seems most original Chevy Volt batteries are still going strong after 6 years with little capacity loss. The last page of this article discusses this: Bolt-Volt battery replacement and degradation

The Nissan Leaf has not been so successful, especially in hot climates. Here's story about having to replace the battery pack after 5 years and 65K miles in Seattle: Nissan in Seattle

I suspect the difference between Leaf and Volt battery longevity is in part how the batteries are cooled (liquid vs air) and the fact that the Volt is a Hybrid, and so the battery may not be as fully discharged as often as a pure electric.

And here's some speculation on Tesla's battery longevity, which might not be that bad either:
Tesla battery longevity

Seems battery technology has been steadily improving over the last decade. And in other areas too: the new Toyota Prius has a new heat pump cabin heating system that they claim is 63% more efficent than resistance cabin heating. Toyota Prime Heat pump

Good post. We also follow the green car reports site. The heat thing was a consideration when we bought our leaf. We decided where we live it wouldn't be a problem. They changed the battery chemistry in later part of 2013 (ours is a 16) to a more heat resistant technology but I think the passive cooling of a leaf still makes them susceptible to early degradation in hot climates. It will be interesting to see what the 2018 leafs use. Passive or active cooling. I guess we will all find out on September 6 th.