This video demonstrates the first installation of a 40 Kwh battery from a 2019 Leaf into a 2012 Leaf that originally had a 24 kwh battery in it. This is the first install in North America using a solution from EV's Enhanced in New Zealand. https://evsenhanced.com/. It was installed by Precision Auto Service in Langley BC, Canada. https://www.precisionautoservice.com.

The best thing about the install is that it makes the car feel like it had a 40 kwh battery right from the factory, I can recommend both Precision and EV's Enhanced, it has given my old car a new life, with a lot more range.