GARAGE DOOR OPENER WITH SECONDARY POWER SOURCE

摘要

A garage door opener having a secondary power source. The garage door opener includes a drive unit and an opening mechanism. The drive unit is configured to be coupled to an external AC power source and to a removable battery pack that provides DC power. The drive unit includes a power unit, a motor coupled to the power unit, and a drive mechanism coupled to the motor. The opening mechanism is coupled to the drive mechanism and configured to open and close a garage door. When AC power is not available, the power unit uses the DC power to operate the garage door opener.