Get in and out when the power is out with Battery Backup*. Keep your opener operating and your garage accessible at all times. Battery Backup powers the garage door opener (and safety features) as if the power was still on. An audible signal sounds when the door is moving under battery power. Bright LED lights let you know when the Battery Backup is charging, in use or when the battery needs to be replaced. * Battery Backup is compatible with : Commander Elite (MS105MYQ) Commander Extreme (MS125MYQ) SilentDrive™ Elite (MR855MYQ) Commander Platinum II Enquire About Installation» Merlin Accessories Compatibility Chart »
