POWER SUPPLY CONTROL DEVICE, CONTROL METHOD, AND STORAGE MEDIUM

Provided is a power supply control device for a vehicle. The power supply control device is a device that controls power supply to a plurality of loads from a second power supply source provided for backup of a first power supply source. The power supply control device includes: a switching unit that switches between a first mode in which power of the second power supply source is supplied to a first load and not supplied to a second load, and a second mode in which the power of the second power supply source is supplied to the second load and not supplied to the first load; and a control unit that controls mode switching of the switching unit based on a state of the vehicle.