The Powerfly 4 625 is based on our most affordable E-Mountainbike but is equipped with a larger 625 Wh battery. The bike continues to feature our RIB system (Removable Integrated Battery), which allows for easy removal and reinstallation of the battery. At the same time, it includes all the additional components that make the Powerfly 4 the perfect entry point into the world of E-Bikes, whether for on-road or off-road use.