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Under load, the EliteBook shuts down after 1:37 h. We test the idle scenario with the Battery Eater Reader's test: The display is set to minimum brightness, the energy module is active and the radio modules are off. The Lenovo ThinkPad X250 (12:59 h) shuts down earlier.
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We think that this is due to the higher resolution of the 820 G2's display. The 820 G2 can only outperform its Haswell sibling while idle. This time, the ThinkPad (5:42 h) performs better.The battery life is not impressive, yet it is acceptable. The radio modules are disabled and the display brightness is set to about 150 cd/m². We test the runtime during video playback by playing the short film Big Buck Bunny (H.264-coding, 1920x1080 pixels) in a loop.
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