Patent ID: 7960920

Claim:
A battery operated LED lighting apparatus comprising: one or more connectors or terminals for receiving a battery voltage output by a battery; at least one light emitting diode; a power supply including a boost regulating circuit, said power supply in communication with said battery to produce an output voltage to said at least one light emitting diode such that a constant direct current is continuously supplied at a predetermined level to said at least one light emitting diode as said battery discharges regardless of voltage fluctuations across said at least one light emitting diode, wherein over said discharge cycle said output voltage is maintained in a range higher than said battery voltage, and wherein the power supply maintains the constant direct current by sensing electrical current directed through the at least one LED; and a voltage sensor for monitoring a voltage across the at least one LED, wherein the boost regulating circuit uses the monitored voltage to maintain the voltage range for the output voltage to said at least one LED.