External 7ah x 36V battery for the Roadster V2 and Roadster V2 Gravel. This pack adds 250wh to your bike, making the total battery capacity 500wh.
This battery pack requires additional assembly and wiring. You need to remove the controller from the downtube and connect the wires of the additional battery pack.
The additional battery pack is self-balanced. It also must be charged individually. It is lockable, easily removable and can be charged off the bike.
2 x Keys
New downtube cover