Jay-Z appears in a commercial for Duracell's powermat. The product charges phones through wireless power hot spots. Which pretty much means, you can charge your phone without plugging it in. The commercial features jigga man's song 'Run This Town' in the background while a busy New Yorker going about his long day without having to charge his phone. He get's a call from someone named 'B'- that's when Jay-z snatches the phone.
Jay-Z also invested in the battery company.