Abstract: An energy saving device having a physical or electronic switch adapted to minimize energy use when not needed where the switch is securable to an adapter plug of an AC/DC power adapter. The switch includes an actuation button where attachment of a rechargeable device to the adapter plug allows electricity to flow from an electrical outlet through the physical or electronic switch and into the transformer of the AC/DC power adapter to allow for the charging of the rechargeable device and where removal of the rechargeable device from the adapter plug results in movement of the actuation button to interrupt the flow of electricity from the electrical outlet to the transformer of the AC/DC power adapter thereby preventing unnecessary power consumption by the AC/DC power adapter.