Gallery is sucking battery but is not on????

Installed Battery Doctor because despite consistently turning off all apps and deleting all apps I don't use, my battery never lasts 3/4 of a day. Tired of being tied to the charger.

Here's the problem: when I optimize, Gallery keeps coming up as a culprit. I do not have Gallery open. What the heck? I googled it and see where others are telling me to unsync it due to some Picassa issue. I have unsynced everything, reset the phone and still every few days this dang Gallery comes up again.

Help! This is driving me crazy.

Which phone do you have? Do you have a SD card? If so, remove it and see if that makes a difference.