Foil Drive FM+ Battery Adaptor

The FM+ Battery Adaptor is required when using the FM+ battery range with Foil Drive Fusion units. The adaptor extends the length of the smaller FM+ batteries so they fit securely in the longer Fusion unit.

Only needed for the Fusion. Not required with the Assist MAX+, which accepts FM+ batteries directly.

Fusion customers who purchased their system before the FM+ batteries were released (September 2026) will need to buy an adaptor with their FM+ 650 Battery. Fusion systems sold after that date include the adaptor in the kit.

Integrated Quick Lock tabs make fitting and removing the adaptor fast and toolless while keeping a solid, unified connection between battery and Fusion base. It gives Fusion riders the choice between maximum runtime with the Fusion 860 and a lighter, more responsive feel with the FM+ range (FM+ 650 now, FM+ 430 coming early 2027), without changing the core system.

In the box: FM+ Battery Adaptor.

Need help confirming compatibility? Contact The Foil Shop before ordering and we’ll help match the right Foil Drive part to your system, mast, battery, and riding goals.