>> Whether the key is on (with either on) or the key is off (with just the >> one
>> in the back), the results are the same: inverter only stays on for a few
>> seconds, indicating that it's not getting enough juice. When the engine's >> on
>> (and, hence, alternator's on), it stays on. But with the engine off, the
>> inverter stays on for just a couple of seconds and then shuts down. >
> Which proves that the battery needs to be replaced, as you've already been
> advised. Sheesh.
>
I kind of agree with this. I think you've got a dead cell. Autozone should have caught that, but they didn't. Maybe they were just wrong. A battery with a dead cell will start your van.