For the past couple of months, my battery has degraded significantly. It used to last an entire work day, now I would be lucky to escape a work day with 20% battery so now it stays tethered to a cable. Even worse, the battery drains significantly after going below 50%. For example, it would hang at 25% and suddenly drop to 12%. I had thought this was a calibration issue, so I attempted a full drain and recharge and issue still persists. Several months ago, I brought my handset to the Genius Bar detailing my issues. They blamed the issue on rogue battery draining apps and push notifications. They suggested a full restore and I was on my way. About a month later, same issues persist, I go ahead and attempt another visit with the Genius bar. They run a battery diagnostic, say that the battery has undergone more charging cycles than a typical iPhone 5, but instead suggests I get a battery case. I ask how much it would cost to get a battery replacement and they state that it would be $75. I know that the Genius bar has gotten more stringent since Plus was introduced, but is this experience typical if you are attempting to replace your phone for battery issues? I may attempt with a different Apple store location, since this one seems very reluctant to do anything.