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"Safest global travel adapter" surges past Kickstarter goal
The device includes one USB-C port and three USB-A ports. It's compatible with UK, EU, Australian and American plug sockets, and should work in 200 countries or so. It includes "press and slide" buttons to select the prongs needed wherever it is you are. Between the USB ports and its plug socket, the adapter can be used to charge up to five devices at once. It also includes a detachable world-to-Europe adapter when you don't need the USB and grounding features.
The Passport Pro's 18 W fast charging is claimed to be 70 percent faster than a 5 W charger (and some rudimentary math would seem to bear that out), and can charge an iPhone X to half-charge in half an hour.
Earthly goods
According to the makers, Zendure, 99 percent of travel adapters don't include grounding (or earthing, if you're from a part of the world that calls it that).