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16
Operation
Battery Backup
ModelB6765 Only
To reduce the risk of FIRE or INJURY to persons:
l Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance.
l Use ONLY Chamberlain part # 041A6357-1 for replacement battery.
l 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.
For battery installation, see Electrical and Wiring step 16 in
the InstallationManual
The battery backup allows access in and out of your garage, even when the power is out. The battery does not have to
be fully charged to operate the garage door opener. When the garage door opener is operating on battery power, it will
run slower and the battery status LED will glow solid orange, a beep will sound approximately every 2 seconds. The
following features are unavailable when operating on battery power:
l Garage Door Opener Lights
l Unattended close devices and features (e.g. myQ
®
App and Timer-to-Close)
Charge the Battery
The battery charges when the garage door opener is plugged into an electrical outlet and requires 24 hours to fully
charge. A fully charged battery supplies power to the garage door opener for 1 to 2 days of normal operation during an
electrical power outage. The battery will last approximately 1 to 2 years with normal usage. To obtain maximum
battery life and prevent damage, disconnect the battery when the garage door opener is unplugged for an extended
period of time, such as in a summer or winter home.
Battery status LED
GREEN LED: All systems are normal.
l A solid green LED light indicates the battery is fully charged.
l A flashing green LED indicates the battery is being charged.
ORANGE LED: The garage door opener has lost power and is in battery backup mode.
l A solid orange LED with beep, sounding approximately every 2 seconds, indicates the garage door opener
is operating on battery power.
l A flashing orange LED with beep, sounding every 30 seconds, indicates the battery is low.
RED LED: The garage door opener's 12V battery needs to be replaced.
l A solid red LED with beep, sounding every 30 seconds, indicates the 12V battery will no longer hold a
charge and needs to be replaced. Please call for replacement battery to allow your system to operate
during a power outage.
Battery
Status LED
Test the Battery
1. Unplug the garage door opener. The battery status LED will either glow solid orange indicating opener is
operating on battery power 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. 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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