Well, when I got my accord in Aug, I noticed after I take the keys out of the ignition, I still had power in my car(power window and power seat etc.) can still be used for a short while.
I just changed my battery and oil last week, and now the power is gone as soon as I turn the engine off.
Does anyone know what I did to it?

 

As noted in the owner's manual:

The power window system needs to be reset after reconnecting the battery.

1. Start the engine. Push down and hold the driver's window switch until the window is fully open.

2. Pull and hold the driver's window switch to close the window completely, then hold the switch for a second or two more.