Over a final integrate of days I’ve run CNET’s
tablet battery empty exam on both a new iPad and a iPad 2. The
iPad 2′s battery life hadn’t been tested given iOS 4.3, so while my concentration was on evaluating a new iPad’s battery, this was also an event to see if iOS 5.1 brought any battery life improvements over 4.3.
The formula pronounce for themselves, though if we need serve explanation, continue reading after a chart.
How we tested battery life
We evaluated battery life a same approach we do for all tablets: by ceaselessly regulating a film record on a iPad until a battery dies.
We set any inscription to Airplane mode and practiced a particular brightnesses to 150 candelas per block scale (cd/m2) or as tighten to that series as possible. For any iPad, that’s a bit reduce than a median symbol on a liughtness scale.
We ran a 720p iPad chronicle of “Toy Story 3.” On a Transformer Prime, we ran a 720p chronicle of “Toy Story 3.” The new iPad also supports 1080p playback of movies, though we’ve nonetheless to run a battery exam with a film record during that resolution.
On a iPads, we ran a film by a Videos app; for a Prime, we used a film actor app mVideoPlayer, as it provides a much-needed repeat video duty that not all native
Android film players include.
While a new iPad emptied faster than a iPad 2, a 12.8 hours of battery life is still a second-highest outcome we’ve seen on a inscription regulating a singular battery. Even compared with a Transformer Prime with a battery-embedded keyboard, a iPad lasted usually 3 hours less. Even some-more considerable was that it achieved this regulating during that impossibly considerable 2,048×1,536-pixel resolution.
Looking during a iPad 2 results, we also saw justification that Apple done some really suggestive battery optimizations going from chronicle 4.3 to 5.1 of a OS. And nonetheless a iPad 2 got 1.4 hours some-more extract when examination a movie, scarcely 13 hours of continual 720p playback is zero to ride your nose at. That gets we an whole deteriorate of “Game of Thrones,” with adequate leftover energy to fist in a integrate “The Walking Dead” episodes as well. That’s a lot of attractive party we can devour on only one charge.
We will follow adult shortly with some-more iPad battery life results, including Wi-Fi-, 4G, and 1080p tests. Also, check out the full tablet battery life list for some-more comparisons.