Patent ID: 8587261

Claim:
An apparatus for charging at least one device, comprising: a power source; at least one charger in electrical communication with the power source, wherein the at least one charger comprises a micro-controller configured to: (a) measure a first voltage of the power source and a first voltage of the at least one device; (b) charge the at least one device when the measured first voltage of the power source is greater than or equal to a preset power source on voltage but less than a preset battery charged voltage; (c) refrain from charging the at least one device when the measured first voltage of the power source is greater than or equal to the preset battery charged voltage; and (d) wait a time delay based on a magnitude of a difference between the preset battery charged voltage and the measured first voltage of the at least one device and measure a second voltage of the power source and a second voltage of the at least one device when the measured first voltage of the power source is less than or equal to a preset power source off voltage that is less than the preset power source on voltage and (e) charge the at least one device when the measured second voltage of the power source is greater than the preset power source on voltage and (f) refrain from charging the at least one device when the measured second voltage of the power source is greater than the preset battery charged voltage or less than or equal to the preset power source off voltage, and at least one housing configured to encase the at least one charger and to conformally receive the at least one device; and at least one pouch configured to receive the at least one charger, the at least one device, and the at least one housing, wherein the the at least one device is removably insertable into the at least one pouch and the at least one charger, and wherein the apparatus is configured to be worn by a user.