Parallel powering of portable electrical devices

A system (100) may include an electronic device (110) configured to consume a supply current; an AC to DC adapter (104) configured to be coupled to the electronic device, wherein the AC to DC adapter has a maximum rated output current; a battery (108) configured to be coupled to the electronic device; DC to DC converter (106) configured to be coupled to the battery (108) and the electronic device (110); and a controller (102) configured to couple the AC to DC adapter (104) to the electronic device, the controller (102) further configured to couple the DC to DC converter (104) to the battery (108) and the electronic device (110) when the supply current exceeds the maximum rated output current of the AC to DC adapter (104).