Battery for use in a watercraft

An electric watercraft comprising:

• a flotation portion;
• a strut having an upper end coupled to the flotation portion;
• a waterproof propulsion system mounted to the strut and including a housing containing an electric motor and an electronic speed controller;
• the electric motor having a shaft, the shaft including a magnet coupled thereto;
• the electronic speed controller positioned adjacent an end of the electric motor and electrically coupled to the electric motor and configured to provide electrical power to the electric motor to operate the electric motor;
• and
• a sensor mounted to a circuit board of the electronic speed controller and configured to capture data associated with the orientation of the magnet coupled to the shaft of the electric motor, the sensor providing the data to the electronic speed controller via an electrical pathway of the circuit board,
• wherein the electronic speed controller is configured to determine a rotational position of the shaft based on the data from the sensor, the electronic speed controller configured to adjust the electrical power provided to the electric motor based at least in part on the rotational position of the shaft.