Pedal Power Bicycle Generator Roller - PPG-R-300w-VRX. DC power system used for phones, laptops, iPads, T.V., Radios, etc... Also, this will charge 12v batteries
K-tor Power Box 20 Watt Pedal Generator, Emergency Charger, Any Portable Devices Charger, Can Charge a 12 Volt Battery, Lightweight, Strong Polycarbonate Plastic