MB/MBP Battery Life?

[interairproxima]

Hey all, I've been considering a MBP or a MB all summer, but I'm not sure. A big deciding factor will be the battery life, coz I can't even remember to charge my own cell phone.
What is the predicted battery life (on the meter) for the MBP when it is at half-brightness? How about for the MB?
Thanks in advance.

 

[kolax]

It is possible to get up to 4 hours at half brightness. Really depends what you are doing on it - if you are doing any CPU heavy stuff like playing a game.

 

[interairproxima]

Im looking at Word, plus internet browsing and general MS Office stuff plus maybe chatting in IM.