Electric bike manufacturer Noordung has designed a bicycle with a battery that charges phones on the go and functions as a backup speaker. The detachable battery sits atop the company's Angel Edition bike, where it sits upon a carbon fibre frame. Once removed, it doubles as a speaker that can play 100 hours of music, controlled by the user's phone. For those running low on power, two USB ports offer room to charge phones or other devices on the go. The multifunctional battery is also able to measure and report on air quality, as well as recommend cleaner routes. As to powering the bicycle, Noordung claims the battery can carry riders for 30 kilometres from a single charge.