There is no such thing as "back to the electricity", or "back to the battery". Like explained by others, it always takes the power (energy) from the battery. REX running or not. So you don't have to fear to be stuck without power in the scenario you describe. As long you have energy in the battery. The REX will only help to maintained the battery level. So don't fear the i3 to stop when the REX will stop. There is no such thing as switching the power source from the REX to the battery. Or vice versa. Power comes from the battery , REX running or not.sipabit wrote:whether the car will return from gas back to electricity ones the gas is out. This scenario would be the opposite of what the car is "supposed" to do. Normally, it runs out of electricity and goes to gas. I'm wondering if the reverse would happen if there's still loads of electricity left.