I did all that in early June, in addition to a wipe and restore to the latest 6. It didn't do a thing for the iPad but the new battery on the phone helped a bit. Still not as good as new though. I really think newer apps suck more life on an older OS. The battery was shot on the phone but they said it was still showing good on the ipad. I just may try the resets again as it's still draining pretty bad.
Thanks for the info on deleting the software update. 8 never finished downloading so I'm good with that.
I really don't like 7, just too flat for me. Oh well
Thanks for the tips!
Ok, sorry that you are having short battery life with your iPad. The only other things I can think of are:
If you move your iPad much and it has a GPS, make sure that in Settings -> location services -> system location services, every every system location service is turned off except compass calibration and automatic time zone setting. The rest of the system services send location data to Apple and do not affect features.
You have a good point, an unoptimized app could be the problem. While you are using apps, evaluate the battery drain of specific apps you use. An app with a new update, that is relatively unoptimized for iOS 6, might drain more battery.
If you use iCloud, some of your data may be corrupted, or the data syncing process may have gone rogue. Maybe try turning off iCloud?
Wait, scratch that: why don't you reset all data and settings, and set up your iPad without iCloud and other services. Then use it and test the battery for a few days. If you do that and the iPad still has poor battery life, the iPad has an internal hardware problem that is not the battery. If you do that and the battery life is fine, I would maybe enable services, features, and iCloud options one by one to figure out what is causing the problem.
Radical alternative solutions:
Update to iOS 8, and a bug might be fixed and the battery life might improve. Or chuck your iPad out a window, problem fixed. Or buy a new iPad, problem fixed. Or use your iPad plugged in, problem fixed.