A power source having a housing is disclosed. A first power cord extends
from the housing. The first power cord has a first connector positioned
at a distal end thereof for selective connection to an external power
source. A second power cord extends from the housing. The second power
cord having a second connector positioned at a distal end thereof for
selective connection to an electronic device. A power adapter is
connected between the first and second power cord. Upon connecting the
external power source, the power adapter detects the presence of and
receives external power through the first power cord and transfers power
to the electronic device through the second cord. The power adapter also
retains a charge therein for providing power to the electronic device
when no external power source is detected.