The Best Laptop
My job keeps me traveling 2 weeks out of every month and I want something that is light, powerful, and on that has a battery that last more than 6 hours and doesn't go bad in a few months this link.
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Have a look at the new Sony Vaio Z Series that offers all that you want and the possibility of buying an extended battery pack.
Have a look at the ultraportable models Lenovo has just launched. Pretty sure you can get 10+ hours of battery life from them.