I'm curious if anyone has actually done a test to see how much more power the Edirol R1 used when you have the display backlight permanently enabled. I ran mine tonight with the backlight on for the entire set, but I knew it was going to be under 90 minutes total. I have to say I was still nervous since I have no idea what impact this has on the battery draw. We're talkin brand new pair of liths, supposed to last 8+ hours for recording without the lighting. Any ideas?