Battery monitoring system for a lift device

A battery monitoring system for a device, the battery monitoring system comprising:

• a plurality of batteries configured to power a plurality of electrical components of the device;
• and
• a controller configured to:
• obtain sensor data from the plurality of batteries;
• determine a state of charge of the batteries for open circuit conditions based on the sensor data;
• determine a state of charge of the batteries for load conditions based on the sensor data;
• determine a state of charge of the batteries for charging conditions based on the sensor data;
• and
• determine an overall state of charge of the batteries based on the state of charge for open circuit conditions, the state of charge of the batteries for load conditions, and the state of charge for charging conditions.

A method for monitoring batteries of a lift device, the method comprising:

• obtaining sensor data from a plurality of batteries of the lift device;
• determining an overall state of charge of the plurality of batteries based on a state of charge of the plurality of batteries for open circuit conditions, a state of charge of the plurality of batteries for load conditions based, and a state of charge of the plurality of batteries for charging conditions;
• and
• providing the overall state of charge of the plurality of batteries to a user device.