When I got my iPhone 4S, I restored from an iCloud backup copy of the iPhone 4 I had before it. I have iCloud on, with backups, push e-mail, calendar and notifications. I don't quit apps unless I see sluggishness or flakiness. I charge my iPhone at night before going to sleep and unplug it in the morning.
And this is my usage.
Pretty much equal to the usage I would get on the iPhone 4. I got another 45 minutes of so of usage, and 6 hours standby before the battery went go from the 24% in that screenshot to near dead.
And this is my usage.

Pretty much equal to the usage I would get on the iPhone 4. I got another 45 minutes of so of usage, and 6 hours standby before the battery went go from the 24% in that screenshot to near dead.