Surface Pro 2 battery life improves by almost 20 percent after firmware update

Microsoft promised a 75 percent increase in battery life for Surface Pro 2 over the original, and the company delivered. In our review we noted that the Surface Pro 2 lasted 7 hours, 33 minutes on the Verge Battery Test, which cycles through a series of websites and high-res images with screen brightness set to 65 percent. Anandtech has discovered that a recently released Surface Pro 2 firmware update has pushed the battery life even further.

In our own Verge Battery Test we can confirm that the battery life on the Surface Pro 2 has increased to 8 hours, 51 minutes following the firmware update, an almost 20 percent increase. Anandtech notes that the improvements appear to be related to a change that lets the Marvell Wi-Fi chipset use...

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