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While running Android, advertising claims the Nexus 7 has a 8 - 11 hours of battery time, Many users claim to get around 6 - 9 hours depending on what type of activity they are doing. Have there been any benchmarks done on the tablet while running Ubuntu? Is it Better or Worse?

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Preliminary testing has shown comparable battery life. There are plans for more rigorous testing in the near future. Stay Tuned!!

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I've done some research on this too: http://smackerelofopinion.blogspot.co.uk/2012/11/non-linear-characteristics-in-draining.html

My findings are:

Screen not dimmed, idle: ~12 hours battery life. Screen not dimmed, 4 CPUs fully loaded: ~7 hours battery life. I've not yet exercised the GPU.

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