Abstract: A patient support apparatus, such as a bed, cot, stretcher, operating table, recliner, or the like, include a litter frame, a support deck, a battery, an AC connector for receiving electrical power, a plurality of motorized actuators, and a control system. The control system limits the amount of electrical power available to the motorized actuators to different levels depending upon whether the AC connector or the battery is powering the patient support apparatus. The control system may also or alternatively change the power available to the motorized actuators depending upon whether a mattress therapy is currently in progress or not. Still further, the control system may pause battery recharging during actuator movement, may utilize one or electronic fuses to control power delivery, and/or wake up sleeping (or shut down) microcontrollers using a specialized network transceiver command that cause the recipient transceiver to wake up its associated microcontroller.