I just ordered a Prius (delivery in 6-8 months) so I can't try this myself:
How long will the A/C run off the traction battery alone? i.e. how long can you sit there stopped with the engine off before the engine gets restarted to charge the battery?
How long will the A/C run off the traction battery alone? i.e. how long can you sit there stopped with the engine off before the engine gets restarted to charge the battery?