I don't have had numbers, but its proper rapid, and I didn't even ride the damned thing (compared to an E-werk). Just spun the wheel. The bike was simply in the stand and I had my phone plugged in to set it all up.
Very impressed, except the the USB plug seems to be susceptible to water damage.
I was thinking about getting some sugru and creating a little waterproof 'docking area' around the USB plug. Having never used Sugru before - is this feasible?
If d1 is faster to charge then OK!