The display is all but invisible without the backlight on. Using the
backlight, of course, chews up the battery at a great rate. I left it
at the default setting of turning the light off after 30 seconds use.
It is usable that way, but not ideal.

That's true with most GPS's, Lowrance especially. Our 2000c is the
same way -- without the backlight on, it's almost useless. Which is
why we have it plugged into ship's power at all times, and regard the
batteries as "emergency back-up" only.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"