The Marbel Electric longboard has 2000W of power and enough torque to climb hills over a 15% grade. Here is a quick video of us on some of the local inclines around the Tampa area. The test rider in this video is 192 lbs. The ramps, bridges, and hills in this video range from 5% all the way up to 21% in grade.
Check out more details here http://bit.ly/Marbel