Patent ID: 7391184

Claim:
A replaceable battery pack for an information handling system, comprising: one or more battery cells; and charger regulation circuitry integrated and contained within said replaceable battery pack, said charger regulation circuitry including analog circuitry configured to adjust charging voltage to said one or more battery cells, and said charger regulation circuitry being configured to adjust charging current to said one or more battery cells to produce two or more charging current values; wherein said replaceable battery pack is configured as a replaceable source of power for a system load of said information handling system, said replaceable battery pack being provided with one or more terminals that separate said replaceable battery pack from other components of said information handling system including said system load; wherein said one or more terminals of said replaceable battery pack are configured to be temporarily coupled to and receive current from a battery charging apparatus of said information handling system, said battery charging apparatus being separated from said replaceable battery pack by said one or more terminals and being integrated and contained within said information handling system, and said replaceable battery pack being replaceable at said one or more terminals with respect to said batten charging apparatus and other components of said information handling system including said system load; wherein said charger regulation circuitry has a single microcontroller integrated and contained within said replaceable battery pack and separated by said one or more terminals from said battery charging apparatus and other components of said information handling system including said system load; wherein said single microcontroller contained within said replaceable battery pack has two current sense inputs, a first one of said current sense inputs being provided from outside said replaceable battery pack to monitor a flow of current within said separate battery charging apparatus of said information handling system, and a second one of said current sense inputs being provided from inside said replaceable battery pack to monitor a flow of current within said replaceable battery pack; wherein said single microcontroller is configured to use said first current sense input to monitor a flow of current within said separate battery charging apparatus of said information handling system; and wherein said single microcontroller is configured to use said second current sense input to monitor a flow of current within said replaceable battery pack.