Charging device

1. A charging device comprising:

a first input interface configured to receive electrical power from a solar panel, wherein the first input interface comprises a solar input interface that defines a dedicated solar input configured to receive power input from at least one of a particular solar panel and a particular type of solar panel;

a second input interface configured to receive electrical power from a second power source, wherein the second input interface comprises a Universal Serial Bus interface; and

a circuit coupled to the first input interface and the second input interface, wherein the circuit is configured to charge a removable energy storage device using the electrical power received from the solar panel and the second power source, wherein the solar input interface is configured to receive electrical power having a first voltage and the Universal Serial Bus interface is configured to receive electrical power having a second voltage that is different than the first voltage, and wherein the first voltage is approximately 6.5 volts and the second voltage is approximately 5 volts,

wherein the circuit includes a boost circuit coupled to the second input interface and configured to boost the voltage of the power received at the second input interface from approximately 5 volts to approximately 6.5 volts to match the voltage of the power received at the first input interface.

2. The charging device of claim 1 , wherein the energy storage device is one of a AA battery or a AAA battery, and wherein the circuit is configured to charge one of a plurality of AA batteries or a plurality of AAA batteries using the electrical power received from the solar panel.

3. The charging device of claim 1 , further comprising an output interface configured to provide electrical power to an electrical device connected to the output interface, wherein the electrical power is provided to the output interface from at least one of the removable energy storage device and the solar input interface.

4. The charging device of claim 1 , wherein the circuit is configured to charge a plurality of energy storage devices, wherein the circuit comprises a charging circuit for each of the plurality of energy storage devices, wherein each charging circuit is configured to charge an energy storage device until the energy storage device has reached a predetermined charge level and the circuit is configured to continue charging the plurality of energy storage devices until all energy storage devices have reached the predetermined charge level.

5. A charging device comprising:

a first input interface configured to receive electrical power having a first voltage, wherein the first input interface comprises a solar input interface that defines a dedicated solar input configured to receive power input from at least one of a particular solar panel and a particular type of solar panel;

a second input interface configured to receive electrical power having a second voltage from a power source, wherein the second input interface comprises a Universal Serial Bus interface, wherein the second voltage is different than the first voltage, and wherein the first voltage is approximately 6.5 volts and the second voltage is approximately 5 volts; and

a circuit coupled to the first input interface and the second input interface, wherein the circuit is configured to charge a removable energy storage device using at least one of the electrical power received at the first input interface and the electrical power received at the second input interface wherein the circuit includes a boost circuit coupled to the second input interface and configured to boost the voltage of the power received at the second input interface from approximately 5 volts to approximately 6.5 volts to match the voltage of the power received at the first input interface.

6. The charging device of claim 5 , wherein the energy storage device is one of a AA battery or a AAA battery, and wherein the circuit is configured to charge one of a plurality of AA batteries or a plurality of AAA batteries using electrical power received from at least one of the solar interface and the Universal Serial Bus interface.

7. The charging device of claim 5 , further comprising an output interface configured to provide electrical power to an electrical device connected to the output interface, wherein the electrical power is provided to the output interface from at least one of the removable energy storage device, the first input interface, and the second input interface.

8. The charging device of claim 5 , wherein the circuit is configured to charge a plurality of energy storage devices, wherein the circuit comprises a charging circuit for each of the plurality of energy storage devices, wherein each charging circuit is configured to charge an energy storage device until the energy storage device has reached a predetermined charge level and the circuit is configured to continue charging the plurality of energy storage devices until all energy storage devices have reached the predetermined charge level.

9. a first input interface configured to receive electrical power from a power source, wherein the first input interface comprises a solar input interface configured to receive electrical power having a first voltage, the solar input interface defining a dedicated solar input configured to receive power input from at least one of a particular solar panel and a particular type of solar panel;

a second input interface configured to receive electrical power having a second voltage that is different than the first voltage, wherein the second input interface comprises a Universal Serial Bus interface, wherein the first voltage is approximately 6.5 volts and the second voltage is approximately 5 volts

an input interface configured to receive electrical power from a power source;

an output interface configured to provide electrical power to an electrical device connected to the output interface; and

a circuit coupled to the first input interface and the second input interface and configured to charge a removable energy storage device using the electrical power received from the power source at the first input interface and the second input interface and to selectively provide electrical power to the output interface from the first input interface and the second input interface,

wherein the circuit includes a boost circuit coupled to the second input interface and configured to boost the voltage of the power received at the second input interface from approximately 5 volts to approximately 6.5 volts to match the voltage of the power received at the first input interface.

10. The charging device of claim 9 , wherein the energy storage device is one of a AA battery or a AAA battery, and wherein the circuit is configured to charge one of a plurality of AA batteries or a plurality of AAA batteries using the electrical power received at the first input interface and the second input interface.

11. The charging device of claim 9 , wherein the circuit is configured to charge a plurality of energy storage devices, wherein the circuit comprises a charging circuit for each of the plurality of energy storage devices, wherein each charging circuit is configured to charge an energy storage device until the energy storage device has reached a predetermined charge level and the circuit is configured to continue charging the plurality of energy storage devices until all energy storage devices have reached the predetermined charge level.

12. The charging device of claim 9 , further comprising a housing and a light coupled to the housing, wherein the circuit is configured to power the light using power from at least one of the removable energy storage device, the first input interface and the second input interface.

13. The charging device of claim 12 , further comprising a selector input configured to enable a user to select a mode from among at least a first mode, a second mode, and a third mode, wherein, in the first mode, the circuit is configured to provide power to the output interface, wherein, in the second mode, the circuit is configured to provide power to the light, and wherein, in the third mode, the circuit is configured to disable both the output interface and the light.