After a week of sitting in the garage, we got into our 2006 Prius and found there was no power--everything was dark and dead. After finding and uncovering the 12 volt battery, I checked the voltage and found it to be 2.5 volts -- definitely discharged.
A jumper from another car got the Prius going; but I'm curious. Has anyone else had this experience? The car was turned off normally. No lights were left on and we we just do the usual city/country driving . The propulsion battery was fine and showed a normal charge as soon as the car started.
TKM