The cover provides protection for the Surface’s touchscreen and doubles as a full keyboard and trackpad. But it has another function that helps the tablet run longer between charges. According to the Microsoft Store the Power Cover is a classic laptop keyboard that extends the battery life of your Surface up to 70 percent. It works with the Surface 2, Surface Pro or Pro 2 while it sleeps.
“You’ll have plenty of juice to stay unplugged all day in the office, during a full day of classes, or on a cross-country flight,” claims Microsoft.
Microsoft Surface 2 ProAccording to the company’s estimates, the Surface Pro 2 can deliver seven hours of video playback, stretching to nearly 12 hours with the Power Cover.
The Power Cover is available in any colour so long as it is black. It uses mechanical keys like those found on the Type Cover 2. It includes a capacitive trackpad, but unlike the Type Cover, its keys are not backlit. It adds 0.55 lbs. to the Surface and is 9.75 mm (0.38 inches) thick. It costs $199.99 which makes it Microsoft’s most expensive keyboard cover