I've noticed quite a few are complaining about poor battery life on your new MBPs. I just got mine, transferred data from my backup and fully charged the machine. When i started using the machine on battery power it says 3:50.. I was thinking .. wtf 4 hours, that what i got on my Santa Rosa!! I checked that TimeMachine wasn't running. Then i opened terminal and ran top, and it all came to me. mdworker is running at full blast. mdworker is the app that rebuilds Spotlight indexes. I'm pretty confident that once it has finished, i'll get a lot better battery life.