I don't have the Plug but do use a Sinewave Revolution and Forumslader and ride between 13 and 16 MPH, with the sinewave I get a little over 12% charge per hour on my cell phone, 2013 moto x. The Forumslader has an integrated power bank that I've yet to see drop below 97% charge and using it the same phone charges at roughly the same rate. As an aside I use my phone as a speedometer so the screen is always on while I ride. I have two dynamo wheels, one has a SP PD-8 and the other an SP PD-8X dynamo.