For this test, we set the tablet's display to 50% brightness, which is still plenty bright and easy on the eyes. The Tab 10.1 was able to last well over 8 hours on its own before it powered down.
This is a fairly new test in our set of benchmarks, so we don't have a lot of other tablet data yet to which we can compare. However, we have run the test on a few smartphones and the Motorola Xoom. The graph above shows how the Tab 10.1 compares. Versus the Motorola product, we pulled almost an additional 3hrs out of the Samsung Galaxy Tab 10.1, and a few extra minutes compared to the Transformer -- impressive.