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The 3.7V Li-Ion battery inside the Galaxy Tab lists a capacity of 14.8 Watt-hours or 4000 mAh.

Samsung claims that the battery provides enough juice to watch seven hours of movies.

That seven hours isn't quite enough to last you though your favorite movie trilogy, something that the iPad would handle with ease.

Weighing in at 81 grams, the Galaxy Tab's battery is about 55% the weight and 60% the capacity of the iPad's hulk of a battery.

As highlighted in the third picture, the Galaxy Tab's battery is approximately half the size of the iPad's battery.

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