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yinyang said:
just to let you know that apple are now selling the 50 watt-hour batteries. not sure when that happened but it was recent...

http://store.apple.com/133-622/WebO...m34J4WJk3ydyN1a1nCmenfS/1.3.0.5.10.3.0.1.13.0

Thanks Yinyang, I hadn't seen that - great to see they've fixed that up. Still reluctant to buy a battery because I probably won't use it enough, but good to know the option to get an identical one is there.

See my signature for my Mac. I get about 2:45 if I have everything going crazy with the screen brightness up. If I'm in a dark room with the screen dimmed and the keyboard lit up I get about 3:45. I always have WiFi on and Bluetooth off.

That's pretty much what I get too, a bit less usually due to the smaller 15" battery. But good to see that the 17" holds its own in battery life too, especially with a nice 58 Watt-hour battery.
 
With the 15" 1.5GHz ...

... I get about 3.5 hours with wifi / bluetooth off.

About 3 hours with wifi on.

This is on default brightness / energy settings.
 
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