With the storm that just passed, we are thinking of getting a cable for a back up battery for the stove. Luckily we didn't need it this time, but we try to be prepared. We saw the photos online and it looks like part of a battery cable with a plug on one side. Does anyone know if there is a way we can make one ourselves? It seems relatively simple, although not sure what gets plugged in where and what gets connected to what. Anyone know? Thanks!