I've just started my hunt for getting a used Leaf, and one that came up was this https://www.carfax.com/VehicleHistory/p/Report.cfx?vin=1N4AZ0CP4EC334840&csearch=0&partner=GAZ_0
The part I noticed the most was "Battery Replaced" in 2015. Do you think that was the main battery or is there some...