Excellent suggestions, thanks! On the lowest setting, however, I got to 67% of battery consumption by the display.
I just did a restart and now I'm at 35%. We'll see how long that holds. It still seems to be draining pretty quickly.
I've read a few reviews that rave about the Charge's battery life. Some of these show the display taking 49% of battery power and even less than 15%. I've never seen mine below 71% and usually a little higher.
I have my display set for auto-adjust and I can't figure out why the battery usage...