Foil Drive battery platforms are not universally interchangeable. Confirm model and voltage before buying.
MAX+ or Fusion? MAX+ is the versatile Gen 2.5 foil assist for many riders; Fusion offers greater power and a larger battery option for demanding starts and longer powered use. Read the comparison.
Can I reuse my original MAX battery? No. Original Gen 2 MAX batteries and chargers do not work on the Gen 2.5 MAX+ platform. FM+ 650 can be used with Fusion with the correct adaptor. Check the battery guide.
What else needs checking? Confirm your foil mast, motor cable length, pod, controller and hardware compatibility for your exact setup before purchasing.