A drive apparatus for use with a computerized combination dial lock includes a rotating or longitudinally translating member which imparts motion to an electrical generator for powering the electrical components of the computerized combination dial lock. The drive apparatus is independent of the combination dial of the computerized lock. In one embodiment, the dial ring of the combination dial is rotatable to drive the electrical generation for power output to the computerized lock components. Alternatively, the combination dial and spindle are spring biased for longitudinal translation thereof to drive the electrical generator. In another embodiment, a lever member adjacent the dial ring or a key inserted in a keyway is rotated for powering the computerized lock. In yet another embodiment, a portable power source is in the form of a key and a portable power source contained therein. The key is designed to engage a keyway mounted in or adjacent the combination dial lock assembly to provide power to the electrical components therein. The power source can include a battery or solar power, or be developed by mechanical energy.