Hey guys! I'm currently using the iPod Touch 2G and lately the battery is getting very weak (Barely gets me through the day with minimal usage) and when the battery dies, I can't turn it back on as they will display the iTunes logo with the USB cable and I have to restore everything again. Can you guys tell me what's wrong with it and if there's anywhere I can change the battery? I went to Machines already and they said I can't change it.

Mine's running on 4.x already.