Systems and methods are provided for allocating charge from an electric vehicle to a connected accessory device. The electric vehicle includes a charge port coupled to a vehicle battery and configured to connect to an accessory device. When the accessory device is connected to the charge port, charge is allocated from the vehicle battery to the accessory device based on a current state of charge (SOC) of the vehicle battery and energy requirements of the vehicle. The connection between the charge port and the accessory device may allow for the transfer of both power and data between the electric vehicle and the accessory device.
