Microsoft officials have dropped hints in the past that the company would be making a combined keyboard/cover for its Surface devices that would include a built-in battery.
The latest anonymously sourced reports from Neowin.net and the Windows SuperSite indicate these new covers are, indeed, in the pipeline.
The so-called Power Covers will extend the battery life of the Intel-Haswell-based Surface 2 Pro, existing Intel-based Surface Pro and the coming ARM-based Surface 2, those sources are saying, but there's no word on exactly how much extra life they will add.
Read more at: Microsoft readies rumored Power Cover for Surface: Reports | ZDNet