The Microsoft Portable Power DC-21 smartphone battery charger, which was first announced in October, is finally on sale on the Microsoft Store website for $49.
The 6000mAh battery can charge a smartphone ? such as a Lumia Windows Phone device ? two times before the charger itself needs to be plugged in again. It can also hold its charge for up to a month if needed, and can be plugged in and charged while also charging a smartphone.
Full story from the WindowsCentral blog...
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