Laptop Battery Keep Going and Going?

March 12, 2011 - PRLog -- The march forward has been steady enough that it might have gone unnoticed, but the battery life for laptop PCs and other portable devices is getting longer. In the GCN Lab’s May 2007 roundupof laptop PCs, the dell latitude d531 battery lasted the longest in the Lab’s worst-case-scenario battery test, clocking a time of 3 hours, 4 minutes. In this year’s laptop roundup, Apple’s MacBook Pro led the field with a time of 5 hours, 13 minutes.

That’s a sign of progress for mobile users, reflecting advances in the development of lower-power systems, for one http://www.adapterlist.com/dell/latitude-d531.htm thing. But it’s not that simple, of course. A lot of factors go into the battery life of a mobile device, including the type of processors, display screens and the batteries themselves – say, whether they are six, eight or nine cells. A laptop manufacturer looking to make a light, highly portable machine might sacrifice battery life for the lighter weight of a smaller battery, for instance.

Nevertheless, if battery life is paramount to you, the length of time your laptop keeps running outweighs, as it were, those other factors. And, overall, manufacturers have been making http://www.adapterlist.com/sony/vgp-bps2c.htm
progress. So, how did the six laptops the Lab recently reviewed stack up in this category?

The Lab tests battery life by running a movie on the hard drive, with the screen brightness and sound each set to 80 percent, a scenario designed to put a lot of stress on the battery. Most users -- the ones not using their PCs as a home theater system substitute -- would find that their laptops last longer than the time listed here.
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The top battery performers from this year’s review:

   * Apple MacBook Pro: 5 hours, 13 minutes.
   * Lenovo ThinkPad W510: 3 hours, 21 minutes.
   * Samsung P580: 2 hours, 33 minutes.
   * HP EliteBook 8540w: 2 hours, 10 minutes.
   * Sony Vaio EB Series: 2 hours, 2 minutes.
The laptops in that review were powerhouse machines, posting high scores on thttp://www.adapterlist.com/dell/inspiron-1525.htm he PassMark Benchmark tests the Lab uses. But if you need that much juice, you might opt for a netbook. They're small, light and inexpensive, but with less powerful processors – though still adequate for many uses. Netbooks might not have big batteries, but they don’t really need them.

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