Device control apparatus and device control method

A device control apparatus comprising:

• a monitoring unit that monitors a state of voltage supply from a battery;
• a first processing unit that, when the start of the voltage supply is detected by the monitoring unit, starts the voltage supply from the battery to some devices among a plurality of devices using the battery as a power supply, operates in a first operation mode, and executes a resume process of the devices;
• and
• a second processing unit that, when the resume process is completed, starts the voltage supply from the battery to devices other than some devices, initializes states of the devices other than some devices, and operates in a second operation mode in which consumption power is larger than consumption power of the first operation mode.