The Supernova The Plug III Dynamo USB Charger is a thoughtful and discrete upgrade to your existing dynamo system. You are your own power plant with ThePlug III. It is simply wired to your front hub and is capable of charging your USB-A devices with 5A at 8 mph. ThePlug III transfers dynamo AC to USB spec, with not upper limit on charge speed. While Supernova does not recommend charging with simultaneous lighting system usage we have done it without issue.
Replaces existing headset top cap
Charges at 5V/500mA at 8mps
Does not include steer expander
New and improved with no upper charge speed limit