Three days after his wife, Beyoncé, gave birth to the couple's first child, Jay-Z has more good news to announce. Duracell Powermat, LLC, a joint venture formed in September 2011 by Protcter & Gamble's Duracell brand and Powermat Technologies, announced today that the Grammy award-winning rapper has signed a multi-year agreement as an investment partner and spokesman for the brand. 

"I believe in the future of wireless energy and I believe that Duracell Powermat is the company to bring on the revolution," said Shawn Carter in a press release. "I'm partnering with Duracell Powermat because they're providing the solutions for the future."

Duracell linked up with Powermat in September of last year to help the wireless charging company better reach the consumer market. When first released, Powermat's main product, a strip that allowed users to power their gadgets with inductive charging negating the use of plug-in chargers, was cool but failed to make a large dent in the consumer market. With the help of Duracell and, now, Jay-Z, the hope is that will change in the future. 

'We are proud to work with such an inspiring icon, whose music and success speaks to an entire generation all over the world. Our common vision and voice will pave the way for the upcoming wireless power revolution," said Ron Rabinowitz, CEO of Duracell Powermat, LLC.

[via Hip Hop DX, Market Watch]