This portable lift interfaces with an automated stacking machine used by an electric vehicle battery manufacturer. The lift uses a docking feature to confirm position at the stacker, and a powered floor brake remains engaged unless an operator holds a button on the handles. When the lift is in motion, the stacks are retained by an arm that closes from the top. A damper system prevents the arm from closing on the sensitive stacks too rapidly, and a sense-for-presence light on the end-effector confirms when the arm is in position.