Along with posting the first battery page, always post the second page, at least the bottom part. A phone with a very weak mobile signal is going to kill the battery. So is one that's awake a lot of the time the screen is off. Without seeing those two things, "my phone gets X hours before it needs a charge and Y hours of screen on time doesn't mean much, unless X and Y are abnormally low or high. Two hours means something is wrong. 40 hours means I want your phone. But "it gets this much time" - with normal percentages on that first page - don't tell us much about why it's getting the time it is. (Your cell standby seems a bit high and your Android OS seems a bit low, but that page doesn't give us any clues about why.)
(Factory resets fix problems when a phone is updated, not when it's new out of the box. Unless your phone was updated, all you're going to do by resetting it is return it to out of the box condition - no accounts, no pictures, no downloaded apps, etc.)