Microsoft To Ship Surface Power Covers For Extended Battery Life Starting March 19
Lenovo itself offered something similar for prior Windows tablets, and now, Microsoft will do similar for its Surface Pro, Surface 2, and Surface Pro 2 tablets. According to the product page, the accessory is set to extend one's Surface battery life by up to 70%. The Power Cover weighs 0.55 pounds and measures 9.75mm thick, and sadly, do not have backlit keys.
They'll ship initially in the United States, Canada, and Japan in around a week, but the $199 asking price will likely spook some prospective buyers. You'll need to be a pretty serious road warrior to justify spending that sum for a bit of extra battery life, but those who frequently find themselves away from a power outlet may appreciate the option.