If your converter doubles the voltage it will also be halving the amperage. The total energy (Watts) available does not increase, in fact it goes down because of conversion losses in the transformer. When I was a kid I thought I could power the whole house from a 9V battery if I could make the right kind of transformer. Alas, it doesn't work that way.cpthk wrote:I saw amazon sell the 120V to 240V transformer. Some brands only cost < $100. (like this) Even the more expensive ones are still under < $200. (like this) Could I use this to convert my house 120V to 240V for the leaf to get level 2 charging? Is there any down side to this? I prefer this since I don't need to hire a electrician to wire a 240V outlet, and no drilling to the house. It is also portable that I could move this anywhere I like. It is also cheaper. Thanks.