According to one embodiment, an electrical storage apparatus includes an electrical storage unit configured to output direct-current power, a switch element configured to block positive-side wiring connecting the electrical storage unit to an outside, a diode connected in parallel with the switch element in a direction of a current flowing from the outside to the electrical storage unit, a voltage detection unit configured to detect voltages at both ends of the switch element, and a switch control unit configured to open the switch element when the voltage detected by the voltage detection unit is a predetermined value or greater.