Electric marine propulsion system and control method

A method of controlling a user interface for an electric marine propulsion system comprising at least one controller, a plurality of batteries, and at least one electric motor powered by the plurality of batteries and configured to rotate a propulsor to propel a marine vessel, the method comprising:

• identifying with the controller which of the plurality of batteries are active batteries available to provide power output to the at least one electric motor;
• determining with the controller a system power limit based on the active batteries;
• determining with the controller whether the system power limit is less than a threshold power output for the at least one electric motor;
• determining with the controller whether a number of active batteries is less than all of the plurality of batteries;
• if the system power limit is less than the threshold power output for the at least one electric motor and the number of active batteries is less than all of the plurality of batteries, activating with the controller an imbalance limit alert so as to control a user interface device based on the imbalance limit alert.

A method of controlling a user interface for an electric marine propulsion system comprising a plurality of batteries and at least one electric motor powered by the plurality of batteries and configured to rotate a propulsor to propel a marine vessel, the method comprising:

• determining a system power limit based on charge levels of each of the plurality of batteries;
• controlling the at least one electric motor so that the system power limit is not exceeded;
• activating an imbalance limit alert when the system power limit for the plurality of batteries is less than a threshold power output for the at least one electric motor and a number of active batteries available to provide power output to the at least one electric motor is less than all of the plurality of batteries;
• and
• controlling a user interface device based on the imbalance limit alert.