I was going on a long trip and had the car loaded. Went to start the engine and it acted like a dead battery and would not even turn over. I loaded everything in my other vehicle and went on my trip and came back 5 days later. I went out to the Acura and it started right up like nothing was wrong, but I could tell by the clock that the power was out for 3 hours. I checked the battery connection and it's OK, so I have no clue why it would be with out power for 3 hours and then go back to normal. Any ideas???