Daws Boost City Ladies-electric bike The Boost City features a 250 watt brushless motor that provides a gently boost to make hills easier on the legs. The motor engages automatically once you start pedaling or can be engaged using the hand throttle. The City has a battery power level mounted on the handlebar to indicate what is left in the battery. The battery takes approximately 5 hours to fully charge and will run for around 25 miles making the bike ideal for daily commutes. The beautiful frames of the City are modern yet sleek and the internal cable routing keeps the wiring tidy. E-bikes really are the future of cycling and with the Boost system you can rest assured you will arrive in great shape.