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scottparsley
hippy
I don't think I have anything that will need 1000mA and I'll likely be using a battery as a buffer between the dynamo and GPS/phone. The Plug III hits USB 5V/500mA at lower speed than the Sinewave so might be better for charging when I'm going slow (which will be almost always :)).
On the flip side: "Unlike The Plug, the Revolution doesn’t simply stop charging at high speeds. Whilst The Plug arbitrarily cuts out above 30km/hr, the Revolution continues to provide a regulated power supply." This might be talking about an older version though?
http://www.tourintune.com/dynamo-usb-chargers-revolution-vs-the-plug/
http://bilenkycycles.blogspot.co.uk/2014/03/field-testing-sinewave-cycles.html