Supplementary power supply for portable electrical devices
A supplementary power supply and method for powering a portable electrical device such as a flashlight having a positive terminal and a negative terminal and battery compartment adapted to receive a standard battery therein. The supply comprises a cap adapted for installation on the battery compartment, an electrical circuit comprising a generator and a positive output and a negative output, and an actuator in mechanical communication with the generator and capable of actuation when the power supply is within the compartment and the cap is installed on the compartment, wherein the electrical circuit is sized and shaped to be received within the battery compartment and interconnect the positive output with the positive terminal and the negative output with the negative terminal, and actuation of the actuator operates the generator to provide an electrical current between the positive output and the negative output. There is also disclosed a kit comprising a plurality of replacement caps.
1. A method of powering a portable electrical device having a positive terminal and a negative terminal and battery compartment having a cap and a standard battery therein, the method comprising:
removing the cap and the standard battery from the battery compartment;
providing a power supply comprising a replacement cap, an electrical circuit comprising a generator and a positive output and a negative output, said electrical circuit sized and shaped to be received within the battery compartment in a space liberated by removal of the standard battery there from, and on insertion to the battery compartment, interconnect said positive output with the positive terminal and said negative output with the negative terminal, and an actuator in mechanical communication with said generator and capable of actuation when said power supply is within the battery compartment and said replacement cap is installed on the battery compartment;
securing said power supply in the battery compartment using said replacement cap; and
actuating said actuator to provide an electrical current between said positive output and said negative output;
wherein said electrical circuit replaces the standard battery which would otherwise provide electricity for powering the device during operation.
2. The method of claim 1 , further comprising a drive shaft attached to said generator, wherein said generator operates to generate electricity when rotated by said drive shaft, said actuator comprises a handle attached to an end of said drive shaft for rotating said drive shaft and wherein actuating said actuator comprises rotating said drive shaft using said handle.
3. The method of claim 1 , wherein said electrical circuit further comprises a capacitor for storing energy generated by operation of said generator, said stored energy being available as an electrical current between said positive output and said negative output.
4. The method of claim 1 , wherein said electrical circuit further comprises a rechargeable battery for storing energy generated by operation of said generator, said stored energy being available as an electrical current between said positive output and said negative output.
5. The method of claim 1 , wherein said battery compartment is adapted to receive a conventional battery selected from the group consisting of AAA, AA, D, C, LR06, 9-volt and button cell.