With all the hoopla about the relative graphics performance of the fourth-generation iPad and the Nexus 10, it's easy to forget another important performance metric: battery life.
Battery life dictates how long you can actually use the unit before it requires a recharge, so I'd say it's pretty darn important. So important in fact that it gets its own blog post. Here I pit the last two generations of iPad, the iPad Mini, the Nexus 7, and the Nexus 10 against each other in a take-no-prisoners battery blood bath! Or acid bath I guess.
How we tested battery life
I evaluated battery life the same way I do for all tablets: by continually running a movie file until the tablet's battery dies.
I set each tablet to Airplane Mode and adjusted their respective brightnesses to 150 candelas per square meter (cd/m2) or as close to that number as possible. The iPads were running version 6.0.1 of iOS; the Nexus 10 ran Android 4.2, while the Nexus 7 was running Android 4.1.2.
I ran the 720p iTunes iPad version of the recent "Avengers" movie on the iPad and the Google Play version of the same movie on the Nexus 10 and Nexus 7, each movie playing through the tablet's native default video players.
The final score is an average of two full runs on each tablet, with the two numbers coming within 5 percent of each other.
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