Universal multiple device power adapter and carry case

A power adapter comprising:

• a power input system that receives power from a power source;
• a first DC voltage output configured to provide power to at least one electronic device;
• a second DC voltage output configured to provide power to at least a second electronic device;
• voltage circuitry coupled to the power input system and to the first DC voltage output and configured to provide multiple DC voltages;
• and
• a selector coupled to the voltage circuitry and configured to select which of the multiple DC voltages to provide to the first DC voltage output.

A method for operating a power supply system to supply power to a plurality of electronic devices, the method comprising:

• selectively connecting an input of the power supply system to one of a plurality of power sources through a selectable power cord by attaching to the power cord a selected one of multiple adapters usable with the power cord and connecting the selected adapter to the one of the plurality of power sources;
• converting the power from the one of the plurality of power sources to a plurality of DC output voltages at a plurality of outputs;
• and
• connecting a plurality of electronic devices to the plurality of outputs.

A carrying case system for powering and or charging multiple electronic devices from a single power source, the carrying case system comprising:

• a housing providing a plurality of compartments for holding the multiple electronic devices;
• a power supply system, the power supply system including:
• a power input system that receives power from a power source;
• a first DC voltage output configured to provide power to at least one electronic device, the first DC voltage output includes a wire connected to a connector;
• a second DC voltage output configured to provide power to at least a second electronic device;
• and
• a plurality of differently-configured replaceable adapters configured to be connected to the connector of the first DC voltage output and to different electronic device.