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Battery Backup*
1 Install the Battery
To reduce the riskofFIRE or INJURY to persons:
l DisconnectALL electricand battery power BEFORE performing ANY service or
maintenance.
l Use ONLY LiftMaster part# 485LM for replacementbattery.
l DO NOT dispose of battery in fire.Battery may explode. Checkwith local codes for
disposal instructions.
ALWAYS wear protective gloves and eye protection when changing the battery or working
around the battery compartment.
1. Unplug the garage door opener.
2. Open the lightlens on the rightside panel ofthe garage door opener. Use a Phillips head
screwdriver to remove the battery cover on the garage door opener.
3. Partially insert the battery into the batterycompartment with the terminals facing out.
4. Connectred (+) and black (-) wires from the garage door opener to the corresponding
terminals on the battery.
5. Replace the battery cover.
6. Plug in the garage door opener.
7. Wait for the green BatteryStatus LED to start flashing before proceeding to test the battery.
Battery
Status LED
* Ifapplicable.
2 Test the Battery
1. Unplug the garage door opener. The batterystatusLEDwill either glow solid orange
indicating opener is operating on batterypower or will flash indicating low battery power.
NOTE: Make sure the garage door opener is unplugged.
2. Open and close the door using the remote control or door control.
NOTE: The garage door opener may run slower if the battery is not fully charged. The battery
will take 24 hours to fully charge.
3. Plug in the garage door opener. Verifythe battery status LED flashing green, indicating the
battery is charging.
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