Portable power adapter with detachable battery unit

A power adapter apparatus comprising:

• an adapter housing that has a first face and a second face opposite the first face;
• AC to DC power conversion circuitry disposed within the adapter housing;
• AC wall outlet prongs disposed in the adapter housing and operatively connected with the power conversion circuitry;
• a DC power connection interface operatively connected with the power conversion circuitry via a cable attached to the adapter housing;
• positive and negative power contacts disposed in the first face of the adapter housing operatively connected with the DC power connection interface;
• a spindle that protrudes outwardly from one of the first and second faces of the adapter housing and around which the cable can be wrapped;
• and
• a flexible cover attached at an end of the spindle distant from the adapter housing, and movable from a closed position with an outer edge of the flexible cover proximate the adapter housing for concealing the wrapped cable to an open position with the outer edge of the flexible cover spaced away from the adapter housing for revealing the wrapped cable.