Extend your range by adding an extra battery! One of the many perks of owning a JupiterBike is the ease of swapping batteries.

This spare battery is designed specifically for the Defiant PRO Fat Tire Folding Electric Bike ONLY (it is not compatible with the Defiant or Defiant ST). It can be charged either inside or outside the frame. Please note that the charger is not included. Specifications: 48v Lithium Ion 10.4Ah.