The TruePower UCS USB Power Outlet is designed to replace a standard wall power outlet, and it comes with two USB ports built in so you can charge your gadgets without the need for a USB plug adapter.

So I've tended to assume, possibly stupidly, that if a device relies on a USB power connection at all then any old AC->USB power adapter is fine to use for it and substitutable for a computer USB port ...

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Charging mobile devices in your car is nothing new, but since most of our phones are USB-based nowadays, using a bulky adapter just seems unnecessary. Here's how to add a USB power outlet to your car.