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The front case assembly has exactly what we always expect inside a tablet: a big battery.

The Nexus 7 has a 4326 mAh, 16 Wh battery that can last 9:49 hours. The Kindle Fire, by comparison, has a 4400 mAh, 16.28 Wh battery -- but only lasts 7:42 hours. Go figure.

For further comparison, this time falls right in between the batteries found in the 2012 iPad models, which have 9:52 hours for HSPA and 9:37 hours for LTE. Except that the iPad 3 units are slightly larger at 42.5 Wh / 11500 mAh.

Unlike the iPad batteries, this battery was actually quite easy to remove; there was only a small amount of adhesive around the metal frame.

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