Bat­tery Life (min­utes)

HWM (Singapore) - - TEST -

(higher is bet­ter)

Even though all these Ul­tra­books have com­pa­ra­ble hard­ware and per­for­mance, our tests show a large dis­crep­ancy be­tween the con­tenders. The Dell Lat­i­tude E7440, with its less power hun­gry i5 pro­ces­sor and lower res­o­lu­tion dis­play, lasted well into the sixth hour, while both the HP Elitebook Fo­lio 1040 G1 and Len­ovo X1 Car­bon pushed a lit­tle more than four hours. Pow­er­ing a WQHD dis­play cer­tainly used up quite a lot of juice for the X1 Car­bon. The Toshiba, with its 52Wh bat­tery and slightly smaller 13.3-inch dis­play lasted an hour more than the HP.

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