![Prof. John Kelly on battery life in Nissan leaf, Chevy Bolt EV [video: Weber State University, Utah]](https://images.hgmsites.net/tmb/prof-john-kelly-on-battery-life-in-nissan-leaf-chevy-bolt-ev-video-weber-state-university-utah_100646577_t.gif)
It's one of the major questions for any electric-car buyer: How long will the battery pack last? And what would it cost to replace it if I do need a new one sometime down the road? Now a new video looks at that question, comparing the different thermal-management technologies in the batteries of the new 2018 Nissan Leaf and the Chevrolet Bolt EV...