Quote:
Originally Posted by jrbroad77 
Can we just stick to facts? the W520 comes with a 9-cell standard. The Macbook Pro 15 has a similar battery capacity, at 95Whr (vs. ~90-95Whr of the W520). perfectblade simply stated the MBP 15 has the highest battery life of any laptop, and I simply provided a rebuttal. Nothing more, nothing less.
But since we're at it, quoted from here: http://www.laptopmag.com/review/laptops/lenovo-thinkpad-x220.aspx

Quote:
Originally Posted by 996gt2 
The problem is, in order to get that kind of battery life out of a Thinkpad, you need the 9 cell battery.
That adds weight and bulk. My T61 weighed about 4.5 lbs with the 4 cell, but with the 9 cell it weighed in at over 6 pounds. Even my 12.1" X220 tablet weighs more than the retina MBP once I put the 8-cell extended battery in.
The retina MBP's ability to get 7 hours of battery life while driving a 2880x1800 screen is very impressive. Even more impressive is the fact that it only weighs 4.4 lbs.

The problem is, in order to get that kind of battery life out of a Thinkpad, you need the 9 cell battery.
That adds weight and bulk. My T61 weighed about 4.5 lbs with the 4 cell, but with the 9 cell it weighed in at over 6 pounds. Even my 12.1" X220 tablet weighs more than the retina MBP once I put the 8-cell extended battery in.
The retina MBP's ability to get 7 hours of battery life while driving a 2880x1800 screen is very impressive. Even more impressive is the fact that it only weighs 4.4 lbs.
Can we just stick to facts? the W520 comes with a 9-cell standard. The Macbook Pro 15 has a similar battery capacity, at 95Whr (vs. ~90-95Whr of the W520). perfectblade simply stated the MBP 15 has the highest battery life of any laptop, and I simply provided a rebuttal. Nothing more, nothing less.But since we're at it, quoted from here: http://www.laptopmag.com/review/laptops/lenovo-thinkpad-x220.aspx
Quote:
At 12 x 9.1 x 1.25 inches and 3.6 pounds (with a nine-cell battery), the ThinkPad X220 is extremely light and thin, ...
Ok, let's stick to the facts. The W520 with a 9 cell also weighs 6.2 pounds. The retina MBP weighs 4.4. The retina MBP is also driving a screen with 2.5 times the resolution of the optional 1080P screen in the W520.
And I quoted the numbers for the X200 tablet, which weighs almost 4 lbs with the extended battery.







In case you didn't realize where this got completely sidetracked, someone said the Macbook Pro 15 w/ Retina Display has the longest battery life, and I (again,) simply stated it does not.


