3 Functions Hospital Electric Bed with Mattress, IV pole, Urine bag holder | AIM Healthcare3 Function Electric care bed has functions as follows: whole bed body lift up and down with balance, backside lifts up and down, leg bends and extends, legs lift up and down, etc. The backup battery comes with a standard plug that connects to the power source, while the bed plug is designed to connect to the battery. This means that even if the battery is removed, the bed can still be directly connected to the power source.