Ok so i charge my ipod fully on sunday. Within three days ive listend to my ipod about 2 hours a day for a total of 6 hours. I watched literally 3 seconds of video and battery cuts in half. Today the battery is at its thinnest red line. Now i know the battery doesnt show how much battery their is 100%..but i gotta feeling my battery is not pushing 20 hours. Ive fully charged and drained it before 3-4 times. Now i bought it online from the apple store. Can i take it to my local Apply Retail store (york dale mall) and have them check it out or would i have to pay? Also its engraved and i have the invisible shield on it. Help!