Michael Knutson
03-22-2012, 06:00 AM
<div class='os_post_top_link'><a href='http://notebooks.com/2012/03/21/inside-a-32-hour-notebook-battery/' target='_blank'>http://notebooks.com/2012/03/21/ins...tebook-battery/</a><br /><br /></div><p><em>"As you may have read, I spent last weekend with an HP EliteBook, an extended battery, and a challenge to use it for 32 hours without plugging in. That may seem like a pretty lofty goal for a laptop, but as you can see from the pictures below, the machine had some pretty serious battery action going on."</em></p><p><img src="http://images.thoughtsmedia.com/resizer/thumbs/size/600/lpt/auto/1332389812.usr17748.jpg" style="border: 1px solid #d2d2bb;" /></p><p>Not exactly an Ultrabook, but 32 hours of usage unplugged and untethered? An interesting trade-off, weight for usage. During the real test, after two hours of usage, battery life was at 93%, using an extended laptop battery and HP's Ultra-cell battery, seen in the picture underneath the HP EliteBook 8460p (4.56 pounds with a 14-inch screen). Even after quickly following a few links and tweets, I wasn't able to find a final answer as to whether or not 32 hours was reached - last I saw was 83% battery life still available after about seven hours of "regular" use. In any event, some extra weight and money get you pretty incredible battery life.</p>