Power up your ride with the Hub Battery Pack! This 3D printed rechargable battery pack holds three (3) 21700 lithium ion cells (included) and fits around your bike wheel hub. At 60Wh, this battery pack can light up your commute every day of the week on a single charge. A 12V 2A li-ion battery charger with a type A plug is included.

The hinged design of the battery pack unfolds for installation, allowing it to fit between the spokes and fold around the hub, where it is locked in place with a screw. This battery pack won't come off your wheels, even during a bone breaking crash; don't ask me how I know this...