This document provides instructions for assembling a bicycle cell phone charger. It is divided into preparation and assembly of the mechanical and electrical systems. The mechanical system uses a rubber wheel, metal plate, and strips along with an alternator and screws to generate electricity from pedaling. The electrical system includes a PC board, voltage regulator, capacitor, wires, USB port, diodes and box that regulate and deliver power to a phone. The systems are connected by soldering input wires from the alternator to output wires on the electrical box, allowing a phone to charge while bicycling.