I've been suspecting that my 3GS battery is sub par. The threads I kept reading about defective batteries, however, were about the battery draining almost completely overnight without any usage. Plus, I noticed that 3G drains the battery faster (coming from a 2G) so I thought maybe it was all in my head. Even after a few discharge cycles, however, I always averaged 5 hours of usage. I thought that was alright, but I was concerned because most of my usage was either WiFi browsing or just using apps that mostly don't use data (no games). I really expected to be getting closer to 8 hours of that type of use. Last night I ran a little experiment. I charged my iPhone to 100% and as soon as I took it off the charger, I plugged in the headphones and started playing the iPod overnight until I found it dead in the morning. With the usage literally 100% iPod with the screen locked, here are my results (after plugging it in and waiting for it to turn on): Settings are: 3G on (full bars) WiFi associated with a network 50% volume 50% brightness (screen was off anyways) Location services on Well, my suspicions have been confirmed. It is rated for 30 hours of iPod usage, and I barely got more usage than is rated for continuous WiFi browsing! Terrible. What is the best way to approach the genius bar? I'm sure they will tell me to restore as as new iPhone, but that isn't really an option for me as I have quite a bit of information in 3rd party app backups (as well as call history, text messages, etc.) that I can not sync to my desktop and I don't want to lose it.