Abstract: A power cable for an electronic device. Implementations may include a serial communication plug and one or more battery adaptors that each include a core including an electrical insulator where the core is coupled at a first end to a positive terminal and at a second end to a negative terminal. The positive terminal may be coupled to a diode coupled to the serial communication plug to which the negative terminal may be coupled. The one or more battery adaptors may be each configured to couple within one or more battery compartments included in an electronic device. The electronic device may receive power from the serial communication plug through the one or more battery adaptors when the one or more battery adaptors are coupled within the one or more battery compartments and when the serial communication plug is coupled within a serial communication receptacle of another electronic device.