A battery-powered power supply system is disclosed that is fully compatible with PMU ASIC and USB power architectures as well as being backwards compatible with the non-PMU power architectures. A battery-powered power supply utilizes a battery source (e.g., two AA battery cells in series), in a circuit including a switching power supply IC with a programmable variable output voltage and current limiter, along with a microcontroller. The invention also can include a flashlight or similar light source, which has utility beyond the obvious uses of a flashlight. The voltage and current supplied by the system of the present invention is controlled by the microcontroller to provide a variable voltage, variable as a function of time, if desired, during the charging operation. The flexibility afforded by a micro-controller controlled system allows the present invention to operate in different power or operational states and to adapt itself to the load demands. Furthermore, a unique power 'boost' feature can be invoked by the user or be automatically invoked.

Title
Battery powered intelligent variable power supply/battery charger
Application Number
PCT/US2006/061359
Publication Number
2007/065111
Application Date
November 29, 2006
Publication Date
June 7, 2007
Inventor
Fishman David A
Agent
SIMPSON Mark D
Assignee
Fishman David A
Charge2go
IPC
G01R 31/36
H02J 07/00
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