Battery Calibration

[acuriouslad]

How dead does it have to be?

I have already run the battery down to zero left it over night and started it up and it had 2% so I ran that down again. Is it now suffice to say that it is dead? Or should I leave it for the rest of the day and try to turn it on and run it down once more - if that is even possible?

I have the latest Macbook Pro 15" high res.

P.S. I only got about 3.5 hours out of my battery nothing intensive watched an hour of video form the hard drive and surfed the net, is that expected or am I getting bad performance?

 

[celticpride678]

Follow these steps to be able to properly calibrate your battery:

http://support.apple.com/kb/ht1490

 

[GGJstudios]

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

 

[DanMacApple]

If you calibrate it correctly and still are getting low battery use then take it in to apple incase you have a defective battery.