If it’s even possible. I’ve personally swapped the main battery pack on a Gen 1 Prius. Not easy, but more tedious than technical. Lifting the assembled unit was a hell of a chore but a coulple strapping dudes managed it. Reconditioned cells are available in a lot of places. I’ve had a Nissan Leaf and would get another one, but even finding a battery, let alone any info on swapping it was pretty much impossible.