I actually do get around 5 hours of batterylife on my Macbook Pro if I use it on the lowest brightness settings, with wifi off and reading pdf documents + typing in iWork.
So, it is possible, but I use my laptop to watch movies when I'm on battery power, which makes it around 3 hours tops.
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I'm a huge Apple fan (not quite a fanboy), but Apple *always* over-exaggerates, embellishes, and flat-out lies about their battery life.
I remember when I bought my 1.67 Powerbook. Claimed 5 hours battery life, but in actuality I've never had it live for more than 3.
Annoying.
I actually do get around 5 hours of batterylife on my Macbook Pro if I use it on the lowest brightness settings, with wifi off and reading pdf documents + typing in iWork.
So, it is possible, but I use my laptop to watch movies when I'm on battery power, which makes it around 3 hours tops.