This charger is specifically designed to help you keep your display battery charged during and after long periods of inactivity.
The display on your Flluid has an internal battery with a life of 2 months when not using your Flluid.
A weak or drained out battery can cause the embedded software to not be communicated well to the controller, hence not giving you the full assistance and experience of your Flluid.
See attached manual for detailed instructions.
Fits all Fuell Flluid bikes.