While I agree that a direct connection to the main traction battery would not be a realistic thing to attempt with a Zoe, it would be possible to draw power at 12V from the small battery and rely on the car's internal inverter to top up that power loss from the traction battery. What I cannot say is whether the car needs to be "turned on" for this top-up process to run, nor whether it will stop after a few mins as the car reverts to its Power Save mode. A Nissan Leaf can supply up to 1kw in this way.
Thanks, Steve. I've loaned Zoe out to a friend at the moment but I'm going to have a good play around with it when she returns. (is Zoe a "she" lol??). I believe that Zoe can supply enough on the DC converter, the only limitation that I can see is not overheating the fairly small 12v battery. I've calculated that 1kw would also be possible but just using 600w just to play safe and that's all I need anyway.
While I agree that a direct connection to the main traction battery would not be a realistic thing to attempt with a Zoe, it would be possible to draw power at 12V from the small battery and rely on the car's internal inverter to top up that power loss from the traction battery. What I cannot say is whether the car needs to be "turned on" for this top-up process to run, nor whether it will stop after a few mins as the car reverts to its Power Save mode. A Nissan Leaf can supply up to 1kw in this way.