efusco said:
Lemme extend Michelle's comment a bit....
Indeed, both 12V outlets power off when the car is powered off. If you desired to power an accessory via the Prius you could always put the car into the IG ON mode (two pushes of the power button without depressing the brake). I THINK this would allow you to use the 12V outlets and the HV would continually recharge the 12V battery giving you a pretty long duration of power.
Alternatively, you could power the prius all the way up to READY mode and just let the ICE run as needed. I think that would be a pretty minimal amount over the course of an evening if the only power drain was a TV or something like that.
--evan
forgot to mention that the ICE will
come on not only to power the
hybrid battery when it gets discharged
(from powering the 12v accessory
battery, which is providing power to
your TV, the car's clock, the car's
alarm (if so equipped), and the car's
computers) but the ICE will come on
to keep itself warmed up. In the
summer this may not occur very often
(15+ minutes), but if it's a cool
evening or even worse winter the
ICE may rarely ever go off.