Nissan Leaf Inverter Kits (for backup power and powering AC loads)
The easiest way to use a Nissan Leaf for backup/emergency power is to utilize the onboard DC to DC converter and a 3rd party pure sine wave inverter. The built-in DC to DC converter takes the onboard high voltage DC and converts it to standard 12V accessory power. The 3rd party pure sine wave inverter takes the 12V accessory power and inverts it to 110V AC. The maximum continuous output is around 1000W (1kW) but that is still sufficient for powering loads like refrigerators, small AC window units, etc. The runtime varies by Leaf model year and battery configuration, as well as the load, but overall you would have a fairly large backup power source for emergency power.
More info below: