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WARNING
CAUTION
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 # G4228 for replacement battery.
DO NOT dispose of battery in re. Battery may explode. Check with local codes for disposal
instructions.
Garage door opener lights
Unattended close devices and features such as myQ
®
App and Timer-to-Close
ALWAYS wear protective gloves and eye protection when changing the battery or working around
the battery compartment.
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 may run slower and the battery status LED will glow solid orange
while the motor is on. The following features are unavailable when operating on battery power:
35
Depending on the power level, the battery may need to charge before performing the test. The garage
door opener must be unplugged to test the battery.
1. Open and close the door using the remote control or door control. While the motor is on, the
battery status LED will either glow solid orange indicating opener is operating on battery
power or will ash indicating low battery power.
NOTE: The garage door opener may run
slower if the battery is not fully charged.
2. Plug in the garage door opener. Verify the battery status LED is ashing green, indicating the
battery is charging.
The battery charges when the garage door opener is plugged into a 120Vac electrical outlet that has
power and requires 24 hours to fully charge. A fully charged battery supplies 12Vdc to the garage
door opener for up to 24 hours during an electrical power outage. After the electrical power has been
restored, the battery will recharge within 24 hours. The battery will last approximately 1 to 2 years with
normal usage. Instructions for replacement are provided with the battery. 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 a summer or winter home.
Battery Backup
STEP 1 Install the Battery
MODELS B4613T, B6713T, AND B6753T
1. Unplug the garage door opener.
2. Open the control door panel on the front of the garage door opener
3. Partially insert the battery into the battery compartment with the terminals facing to the
right as shown.
4. Connect red (+) and black (-) wires from the garage door opener to the corresponding
terminals on the battery.
5. Fully insert the battery and close the control door panel.
STEP 2 Test the Battery
Charge the Battery
Battery Status LED
1
2
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