Patent ID: 9024570
Filing Date: 2015-05-05
Classification: H02J

Abstract:
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.