iOS 6.1.3 Setback: Battery Duration
Ever since I updated to iOS 6.1.3, I have experienced a setback in my iOS hardware: My iPod's battery has been going downfall. My battery's duration used to go a few hours, but since the iOS 6.1.3 upgrade, my battery is only able to last for 30 minutes, then it tells me that I have 20% remaining.
Is there anything I could try? Should I wait until the iOS 6.2 update is released (if there is one)?
iPod touch, iOS 6.1.3, 32 GB