A firmware update for Microsoft's Surface Pro 2 appears to have drastically improved battery life, addressing one of the beefy tablet's biggest weak points.
Microsoft issued the firmware update shortly after the Surface Pro 2 launched. According to AnandTech, web browsing on Wi-Fi jumped to 8.33 hours, compared to 6.68 hours before the firmware update. Video playback also got a boost, from 6.65 hours to 7.73 hours.
Another test by The Verge yielded 8 hours and 51 minutes of battery life when cycling through web pages and still images. That's a 20 percent improvement over the 7 hours and 33 minutes achieved in the site's previous testing.
AnandTech says the update allows Surface Pro 2's Marvell Wi-Fi solution to reach lower power states than before. It's unclear why this functionality wasn't included at launch. In any case, the firmware update appears to validate Microsoft's claims of a 75 percent battery improvement over the original Surface Pro. The first-generation Pro lasted for about four or five hours on a charge, so a 75 percent improvement would put Surface Pro 2 battery life in the seven- to eight-hour range.
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