I bought two on Day 1, an 8 Gb and a 4 Gb. My wife charges her 4 Gb about every three or four days. That has been pretty consistent since new. A caveat here is she uses hers almost exclusively as a phone. She hardly ever uses the iPod function or the e-mail. Google maps is the only app she ever uses. I, however, use the crap out of mine. I check my e-mail all day; check my stock portfolio - Apple is at $139.53 @ 3:34 CDT; check the weather and use it as a phone, with a bluetooth headset. I normally charge mine every other day. I do synch it every night because I rely heavily on the calender, so it is getting a small charge every day, but I doubt it is much. If I did not get at least two good days with heavy use, I would take it back to Apple. Less than a day is clearly a bad battery.