US Patent 7900805 Surgical instrument with enhanced battery performance

An assembly including a component of a surgical instrument, such as an endoscopic or laparoscopic instrument. The assembly may comprise a package; a surgical instrument component within the package; and a power source within the package. The power source may be configured to be placed in electrical communication with the surgical instrument component. The assembly may also comprise an auxiliary power source within the package and a circuit element, where the circuit element is in electrical communication with the power source and the auxiliary power source.