Turning a Recumbent Exercise Bike Into a Generator - DIY Pedal Drive Battery Charger - YouTube
Pedal Powered Mobile Charger - Instructables
Amazon.com : Pedal Power Bicycle Generator Emergency Backup Power System 500 Watts 12 Volts, 24 Volts, 48 Volts Direct Current Lead Acid Battery Charging System : Crank Generator : Patio, Lawn & Garden
Portable Pedal Power Generator, Emergency Charger, Can Charge a 12 Volt Battery | Home Design, Garden & Architecture Blog Magazine
WeWatt Kiosk | Pedal Powered Multi Device Charging Station
WeWatt pedal-powered chargers expands with business angel cash - WeWatt
Amazon.com: K-tor Power Box 20 Watt Pedal Generator, Can Charge a 12 Volt Battery, Bundled with Powersteam 12 volt charger and Cree Rechargeable flashlight with integrated USB : Patio, Lawn & Garden
PedalCell CadenceX provides pedal-powered charge for your phone, lights, and more! - Bikerumor