An electric vehicle comprising: a load of a plurality of batteries including a first battery and a second battery, the load being provided with a capacitor; an electric circuit that is configured to switch connection among the plurality of batteries, the load, and a power supply supplying power to the plurality of batteries a first rectifier configured to rectify a current flowing between a high-potential side terminal of the power supply and a high-potential side terminal of the first battery; a second rectifier configured to rectify a current being different from the current and flowing between the high-potential side terminal of the power supply and a high-potential side terminal of the second battery; and connection switching devices configured to connect the plurality of batteries in series and release the series connection of the plurality of batteries during a period in which the power supply supplies power to the plurality of batteries, wherein the connection switching devices include a first contactor configured to switch connection and non-connection between a low-potential side terminal of the first battery and the high-potential side terminal of the second battery, and a second contactor configured to switch connection and non-connection between the low-potential side terminal of the first battery and a low-potential side terminal of the second battery, the electric vehicle further comprising: a control unit configured to control the connection switching devices to switch among a first connection mode in which the first battery, the second battery are connected in parallel, a second connection mode in which a capacitor is connected in parallel to both ends of a pair of the first battery and the second battery connected in series, and a third connection mode in which the first battery and the capacitor are electrically connected in parallel. a load of a plurality of batteries including a first battery and a second battery, the load being provided with a capacitor; an electric circuit that is configured to switch connection among the plurality of batteries, the load, and a power supply supplying power to the plurality of batteries a first rectifier configured to rectify a current flowing between a high-potential side terminal of the power supply and a high-potential side terminal of the first battery; a second rectifier configured to rectify a current being different from the current and flowing between the high-potential side terminal of the power supply and a high-potential side terminal of the second battery; and connection switching devices configured to connect the plurality of batteries in series and release the series connection of the plurality of batteries during a period in which the power supply supplies power to the plurality of batteries, wherein the connection switching devices include a first contactor configured to switch connection and non-connection between a low-potential side terminal of the first battery and the high-potential side terminal of the second battery, and a second contactor configured to switch connection and non-connection between the low-potential side terminal of the first battery and a low-potential side terminal of the second battery, a first contactor configured to switch connection and non-connection between a low-potential side terminal of the first battery and the high-potential side terminal of the second battery, and a second contactor configured to switch connection and non-connection between the low-potential side terminal of the first battery and a low-potential side terminal of the second battery, the electric vehicle further comprising: a control unit configured to control the connection switching devices to switch among a first connection mode in which the first battery, the second battery are connected in parallel, a second connection mode in which a capacitor is connected in parallel to both ends of a pair of the first battery and the second battery connected in series, and a third connection mode in which the first battery and the capacitor are electrically connected in parallel.