What is a rider friendly charger? At first, you can easily install it onto your bike, second, it can provide energy via pedaling. If you think so, the Ride-a-long portable charger should be a nice option.
The Ride-a-long is a unique petal powered USB charger that perfectly match with your love for cycling. As shown in the images, the portable charger consists of two parts, including a portable generator and a USB output. The portable generator can be easily attached to the axle of the rear wheel. Once you start cycling, the Ride-a-long generates clean energy for your mobile device using the spin of the bike wheel, and the USB output can be securely attached on the handle for easy access. Furthermore, the portable charger comes with a removable 1650mAh backup battery that can be charged via pedaling or USB port.
The Ride-a-long pedal powered portable charger is priced at $129 USD. If you like it, head to Photojojo online store for full description.