Yup - AA is the way to go. After reading Denton Doc and others posting about converting standard, non portable finders it seems fairly straightforward. One of the reasons I'm not looking at the Garmin 150 is that its  200 watt rms model so more power consumption. The only thing I'm not sure about yet with the Garmin is the screen readability in direct sunlight. I'm used to eagle products and always found seeing the screen in sunlight fine with them. what I do like is the look of the tilt and swivel mount. Looking forward to seeing an actual unit when they come out in a couple months.

Moonman.