New MBP - Is my battery ok?

[tbone-junction]

I have a 3 week old 15" MBP 2.66 Core i7 4GB and after a full charge i've never shown more than 5 hours remaining on my battery status; shouldn't it be showing 8 - 9 hours remaining?

I've followed the calibration steps outlined on the Apple site (full charge, leave plugged in for 2 hours then run down to empty, wait 5 hours and turn on to fully charge again) but i'm getting disapointing 'remaining battery' time readings. Here are my coconut stats:

I have the screen at half brightness and have safari, mail and PS CS3 open, so internet browsing and some light editing in PS. I also see wild jumps from 5 hours, down to 3 hours, back up to 4 hours on the battery status, all within the space of 10 minutes.

 

[GGJstudios]

This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ

I also see wild jumps from 5 hours, down to 3 hours, back up to 4 hours on the battery status, all within the space of 10 minutes.

The time remaining is an ever-changing estimate, based on the current power demands of your MBP, which change as the workload on your Mac changes.

 

[alphaod]

I've never gotten more than 5 hours of battery life and my battery health has never been higher than 97%.

 

[tbone-junction]

This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ

The time remaining is an ever-changing estimate, based on the current power demands of your MBP, which change as the workload on your Mac changes.

thanks, I guess I was naive about real-world use being so different to advertised specs.

I've never gotten more than 5 hours of battery life and my battery health has never been higher than 97%.

that would annoy me