LiftMaster 8550 Garage Door Opener/Battery Backup

Take a look at the LiftMaster 8550 Elite Series Garage Door Opener. Belt Driven, Battery Backup, Multi function Smart Control Panel, Safety Sensors, My Q technology for remote access via internet or smart phone, (with optional internet gateway 828lm). For more go to www.gsoverheads...

[@MsGail61]

Can you tell me why my battery backup failed during Irma, even though I have a full charge when the power is on?

[@amirtherepairguy8066]

When the power goes out it last 24 hour and battery run the motor and making a beeping noise and there is no light it run 12 volt and you need to replace about 1 year when battery beep that indicated you have a battery fail then your garage will not work