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Duracell Powermat and Starbucks are expanding wireless charging to the Silicon Valley Area. Photo via PRNewsFoto/Duracell Powermat.

You can get a little extra jolt at Starbucks locations in the Bay Area both for your mental state, and now, for your smartphone.

Starbucks, which began testing wireless charging mats for mobile phones in selected Boston-area locations last fall, is now rolling out Duracell Powermats in the smartphone-saturated Silicon Valley.

Adam Brotman, Starbucks’ chief digital officer and one of GeekWire’s 2012 Newsmakers of the Year, said that there was positive response in Boston and thus the rollout to the west coast.

“More and more customers are using Starbucks as their home base and they are looking to recharge in a number of ways,” Brotman said in a press release.

The charging mats comply with standards of the Power Matters Alliance (PMA), a group formed by Powermat Technologies and Duracell parent Procter & Gamble. PMA is a rival of sorts to the Wireless Power Consortium, which is behind the Qi wireless charging standard. Members of Qi include Energizer, plus Samsung, HTC, Nokia and other mobile phone makers, many of which are also apart of the PMA.

Wireless charging for most phones, including the iPhone, requires a special case, but others have started integrating the technology into their phones, including Nokia’s Lumia 920 Windows Phone. AT&T said earlier this year that several of its smartphones will be compatible with the PMA standard in 2014.

At this point, to get some extra juice at Starbucks you’ll need a PMA-certified device or smartphone case.

Starbucks posted strong earnings this week, as earnings-per-share increased 28 percent, the best third-quarter performance in the company’s history.

Previously on GeekWire: Inside La Marzocco: Starbucks’ original espresso machine gets a high-tech makeover

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