Is it really off or is the backlight set to full dim? Try setting the backlight while on the cradle to see if on battery it is fully down, and if so, set it up some.

Want to know about GPS? See GPS 101. Want to know more? See GPS 201.

We must pay more careful attention, therefore, to what we have heard, so that we do not drift away. Hebrews 2:1 (NIV)