Presented here are the top five 2011 laptops for battery life, as measured by our in-house video playback battery drain test. It's easy to guess that Apple makes at least one appearance on this list, but there are some surprises as well. Note that these rankings only include integrated batteries, not secondary add-on slice batteries. If we included those, systems such as Sony's Vaio Z, with a combined 634 minutes between its internal battery and a $150 add-on slice battery together, would make the list.
Lenovo's ThinkPad business laptop line is known for its excellent quality, superior keyboards, and often, very good battery life. This recent update (which is currently being reviewed) to the very common ThinkPad T20 turned in one of the best battery life scores of the year at 442 minutes.
Pulling off something of an upset, the longest-lasting laptop of 2011 is the HP Pavilion dv7. Few large laptops actually take advantage of the bigger footprint of a desktop replacement laptop to pack in a gigantic, powerful battery, but CNET Labs editor and laptops tester Julie Rivera explains that this particular HP configuration, "had a huge 100WHr, nine-cell battery," that ran for a very impressive 513 minutes. Read the full review here.