Dynamo hubs provide a source to keep your vital lighting and electronics charged when you're far from civilisation. All you have to do is keep pedalling.
Juice Boost is a highly efficient, low drag device with a 6V / 3W output. Tested down to -20C, it is ready for extreme conditions and suitable for road, cross and mountain bikes with boost hubs.
We do not recommend charging your expensive electronic gadgetry directly from the hub dynamo. It provides an unregulated AC output that you can convert via a USB charger to provide a reliable DC current.
Weight: 494 g Axle: 110 mm, 15 mm Bolt-Thru or QR 6 bolt disc mount Flange to Centre: 29 mm Flange Diameter: 58.5 mm