This type of chair is called hybrid, but is really motor assistance to a hand (manually) powered unit for the more athletics type. Is lightweight 16 kg and motor power of 24 watt.
There are two independent motors to assist the manual driving which implies one can travel further and swiftly. The lightweight battery (2.3 kg) permits travel (radius) distance of 15 km. Further, since the battery is located outside, there is a possibility to locate an extra battery to increase the travel distance. An advantage of the aforesaid battery location : it can easily removed for charging-up indoors.