Battery Backup - Chamberlain HD920EV Owner's Manual

Battery Backup

STEP 1 Install the Battery
To reduce the risk of FIRE or INJURY to persons:
• Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance.
• Use ONLY Chamberlain part # 41A6357-1 for replacement battery.
• DO NOT dispose of battery in fire. Battery may explode. Check with 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 light lens on the right side panel of the 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 battery compartment with the terminals facing out.
4. Connect red (+) 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 Battery Status LED to start flashing before proceeding to test the battery.
Battery
Status LED
STEP 2 Test the Battery
1. Unplug the garage door opener. The battery status LED will wither glow solid orange
indicating opener is operating on battery power or will flash indicating low battery power. Make
sure the garage door opener is unplugged.
2. Open and close the door using the remote control or door control. 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. Verify the battery status LED is flashing green, indicating the
battery is charging.
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