With light use i get about 4 to 5 days, heavy use i get about a day or two. Check to see if you have location services (GPS) running, wifi, etc as the more parasitic things you can turn off the better the battery life of course.
Enjoy the Music,
Radio Shack Nokia CT-300, Motorola 8000H, iDen GSM, Motorola MPx220, Palm Pilot, 3125, HP Jornada 720, HTC Fuze, Samsung Focus, Apple iPad 2, iPad 4 w/4G LTE, HTC Jetstream, Samsung Galaxy Note, Note II, Note III, Galaxy Gear Watch, Nexus 7, Nexus 10... and at least three others i have forgotten what they were(!).