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Multi-regions socket (works in over 200 countries and regions with U.S., U.K., E.U., and AU plugs).
AC input: 100-250V, 50-60Hz.
AC output: 10A mac (1000W at 100V, 2500W at 250V) -- note that the E-Cube is not a voltage convertor.
Built-in 10A self-resetting fuse.
I've been testing the Polarries E-Cube 100 for a few weeks and it's been with me on a number of adventures, happily taking over from the numerous chunky chargers that used to accompany me on my travels.
The 100W max USB output means that it can even charge my 16-inch MacBook Pro, albeit not at the full 140W. But the 100W charging is more than acceptable and means I can leave my bulky -- and expensive to replace -- Apple 140W charger at home.
The E-Cube 100 is a very capable travel adapter, and thanks to the GaN technology, it can output more power and yet still remain cooler than adapters that use the older silicon technology.
Next, is it safe?
I've put the E-Cube 100 through a barrage of tests, including pushing it beyond its limits, and had no problems at all. One such test was having it running at full output for eight hours and keeping an eye on the stability of the power being outputted and the temperature.
The E-Cube 100 passed all these tests with flying colors.
This is harder to gauge, but I've been using the E-Cube 100 extensively since I got my hands on it late last year, and it's still working perfectly (and I've not been careful with it or with keeping it in its protective carry case).
I'm confident of its reliability. So much so that it's been my sole means of charging my devices on most trips.
The Polarries E-Cube 100 is currently available for backing on Kickstarter, and you can pick one up for $65 (the recommended retail price is listed as $119), with devices slated to start shipping in April of this year. For that, you get the travel adapter, the carry case, and a 240W USB-C cable.