Design-wise the Nexus 4 Wireless Charger looks similar to a smaller Nexus Q cut in half, down to the matching recessed square connector cutout.

ENGADGET

That's where the similarities end -- while the Touchstone is cylindrical and uses a proprietary wireless charging system, the Nexus 4 Wireless Charger is larger, spherical and Qi-compatible.

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Google, meanwhile, started pushing Android 4.2.2 to select Nexus devices (promising performance improvements and a few other tweaks), and finally, after an incredibly long wait, released the Nexus 4 wireless charger.

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The manual warns to "use only the power adapter and micro-USB cable that come with your Nexus 4 Wireless Charger", but we didn't have any trouble with other USB power sources beyond longer charging times.

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TI's bq51050B is the industry's first Wireless Power Consortium (WPC) 1.1 Qi-compliant wireless power receiver with integrated direct battery charger, and enables faster, more efficient charging of smartphones, wireless keyboards and other portable electronics.

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The U.S. wireless industry association said that American consumers would likely see a universal cellphone charger sooner than expected, due, in part, to a recent European initiative.

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With the increasing popularity of cable-free charging pads that allow devices to soak up juice from a mat (or even a pillow), the Wireless Power Consortium is lobbying to standardize such systems so that any phone can access any charger.

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