High Tide has developed a generator solution targeted for emerging nations.
The system consists of the RollerGen Dyno supported by a custom-designed stand. The Dyno is slightly modified so that the generator will output 100 watts maximum.

Generator assembled to frame. The only feature that a user will see will be the power output wire.
Edge view of generator assembly.
Photo showing Shakti pushed up against the rear bicycle tire. A standard off-the-shelf 12V lead-acid battery is being charged.