Today James is with Matt, owner of Cleevely Electric Vehicles, and they're fitting the much sought after Muxsan battery upgrade to a 30kWh Nissan Leaf with a degraded battery pack. This particular vehicle is a taxi and has covered 94k miles. Naturally, the owner needs the maximum range to help with work, but doesn't want the expense of buying a newer vehicle, so hopefully this option will see them through another 100k miles.