An electronic focal adjustment system for night vision devices includes a focal adjustment apparatus, a power source apparatus, a button apparatus, and a sensor device. The focal adjustment apparatus may also include a housing that couples to a night vision device. The power source apparatus may communicate with the focal adjustment apparatus, which is configured to interact with an objective lens of the night vision device. A user may set the system to desired focal adjustments. Accordingly, the power source apparatus may send a signal to the focal adjustment apparatus to activate a motor to adjust the system to a user's pre-calibrated focal adjustments.