Battery on iPod Touch 4th Gen. draining too quickly.
The battery on my iPod Touch suddenly started draining even when I am not using it. This has only happened in the past few days. Before the battery would last all day, even with heavy usage, and I hardly ever reached low battery. I charge it every night. Yesterday I got a low battery warning, even though I didn't use it much and when I did, I was listening to music with the display off, which normally requires very little battery power. Today at the end of the day I tried to turn it on, only to discover that the battery had drained completely while it was merely sitting in my pocket. What is going on, and what can I do?
iPod touch (4th generation), iOS 6.1