Depends which you are buying. Battery leasing is common on recent Renault and Nissan, so you need to establish exactly what you are getting with either of these makes. Not generally a problem with other EVs and older Renault and Nissan. Some, such as the Renault Fluence, are seriously cheap, but the reason for that is the potential to have to replace the batteries at enormous cost. A hybrid or a plug-in hybrid probably makes more sense.