Microsoft patent filing shows a Surface Pen with a rechargeable battery

As it stands, Microsoft’s Surface Pen stylus will last about a year off of its non-rechargeable battery, according to the company. While that’s pretty good, it still means you’ll have to buy a new battery at some point. It isn’t a big deal, but it’s an annoyance nonetheless. 
Microsoft may be hard at work to address that annoyance, however: According to Patently Mobile, Microsoft filed a patent for a rechargeable stylus and charging cradle.To read this article