Battery management systems and methods

A lift device comprising:

• a base having a plurality of wheels;
• a linear actuator configured to selectively move a work platform configured to support a load between a raised position and a lowered position, the linear actuator having an electric motor;
• and
• a rechargeable battery system including a battery, a heating system, and a battery charger, the battery configured to power the electric motor of the linear actuator, the heating system configured to selectively provide heat to the battery, the battery charger configured to selectively charge the battery and to selectively charge the heating system;
• wherein the heating system is configured to receive power from the battery through a battery power connection and to receive power from the battery charger through a battery charger power connection.

A rechargeable battery system for a lift device, the rechargeable battery system comprising:

• a battery configured to power at least one component of the lift device;
• a heating system configured to selectively provide heat to the battery;
• and
• a battery charger configured to selectively charge the battery and to selectively charge the heating system;
• wherein the heating system is configured to selectively receive power from the battery through a battery power connection and to selectively receive power from the battery charger through a battery charger power connection.