A method for determining a load supported by a work platform of a lift device, the method comprising: providing the lift device including the work platform and a linear actuator configured to support and selectively move the work platform between a raised and a lowered position, the linear actuator having an electric motor and an electromagnetic brake ; disengaging the electromagnetic brake of the linear actuator ; maintaining a height of the work platform using the electric motor of the linear actuator ; determining a motor torque applied by the electric motor; determining an actuator force applied by the linear actuator to the work platform based on the motor torque applied by the electric motor; determining the height of the work platform ; and determining the load supported by the work platform based on the actuator force applied to the work platform and the height of the work platform , wherein the motor torque is determined based on at least one of a measured motor current of the electric motor, a measured motor slip of the electric motor, a motor type of the electric motor, a winding density of a coil of the electric motor, and a winding material of the coil of the electric motor, wherein the lift device is a scissor lift having a foldable series of linked support members and the height of the work platform is determined based on a lift angle of at least one linked support member , wherein the load supported by the work platform is determined at least partially based on a height-force curve for the lift device, and wherein the linear actuator includes a push tube assembly having a protective outer tube and an inner push tube and the load supported by the work platform is further determined based on a monitored compression of the inner push tube. providing the lift device including the work platform and a linear actuator configured to support and selectively move the work platform between a raised and a lowered position, the linear actuator having an electric motor and an electromagnetic brake ; disengaging the electromagnetic brake of the linear actuator ; maintaining a height of the work platform using the electric motor of the linear actuator ; determining a motor torque applied by the electric motor; determining an actuator force applied by the linear actuator to the work platform based on the motor torque applied by the electric motor; determining the height of the work platform ; and determining the load supported by the work platform based on the actuator force applied to the work platform and the height of the work platform , wherein the motor torque is determined based on at least one of a measured motor current of the electric motor, a measured motor slip of the electric motor, a motor type of the electric motor, a winding density of a coil of the electric motor, and a winding material of the coil of the electric motor, wherein the lift device is a scissor lift having a foldable series of linked support members and the height of the work platform is determined based on a lift angle of at least one linked support member , wherein the load supported by the work platform is determined at least partially based on a height-force curve for the lift device, and wherein the linear actuator includes a push tube assembly having a protective outer tube and an inner push tube and the load supported by the work platform is further determined based on a monitored compression of the inner push tube. <EOS>