Chamberlain garage door opener backup battery replacement

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Why the Garage Door Opener Is Beeping
Why Is the Garage Door Opener Beeping?
Garage Door Opener with a Battery Backup
Useful Information about the Backup Battery
How long does Chamberlain backup battery last?
What size battery does a Chamberlain garage door opener take?
Is battery backup necessary for garage door opener?

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This video demonstrates how to replace the backup battery in your LiftMaster garage door opener.

Why the Garage Door Opener Is Beeping

Why Is the Garage Door Opener Beeping?

Premium Chamberlain garage door openers featuring a battery backup and/or Wi-Fi connectivity alert you by making a beeping sound. You will hear a beep to confirm when a step is performed successfully or you will hear a beep to diagnose an issue. The number of beeps heard will depend on the type of garage door opener and the function you are performing on the garage door opener.

Garage Door Opener with a Battery Backup

Beeping every 2 seconds
- This means the unit is operating under battery power. The battery LED will display solid orange.
- Ensure the power is restored throughout the house. If power is restored but the LED is still orange, then test the electrical outlet by plugging in a different device.
Beeping every 30 seconds
- If the battery LED is flashing orange it means the battery is low.
  - Test the electrical outlet by plugging in a different device. If there is power and the LED does not change to a flashing green, then replace the battery.
- If the battery LED is solid red, then the battery is dead and cannot recharge.
  - Replace the battery.

NOTE: To temporarily stop the beeping while waiting on a new battery, unplug the unit and disconnect the battery. After disconnecting the battery, plug the unit back in and the beeping will stop. For more information on replacing the battery, see Chamberlain Battery Replacement Instructions.

Useful Information about the Backup Battery

A fully charged battery is designed to provide the operator with 24 hours of standby time during which the opener can run up to 20 full cycles at room temperature.

It is a 12-volt rechargeable battery with 4.5 AH (amp hours).
The weight of the battery is 4.5 lbs.
The backup battery is an accessory and has a one year warranty from the date of purchase.

This article explains how to replace the battery in a Chamberlain garage door opener step-by-step. If the Chamberlain garage door opener you have has a backup system, the battery powers it. Every one to two years, the battery in the garage door opener should be replaced.

The battery monitoring feature on the backup system will alert you with a sound signal if your battery needs to be changed. The garage door backup system’s main goal is to open the garage door in the event of a power outage. This is why the backup battery for your garage door opener needs to be in good condition and able to maintain its charge for at least one cycle of opening and closing the door.

You simply need safety gear, including gloves and eye protection, the replacement battery, and a screwdriver to change the garage door opener batteries.

Disconnect the power cord from the garage door opener.
Unlock the garage door opener light lens.
Take the top off the battery compartment.
Remove the battery from the device and cut the red and black wires from it.
Attach the new garage door opener battery to the red and black wire. Make sure the red wire is connected to the battery’s red contact and the black wire to its black terminal.
Place the fresh battery for the garage door opener in the space and close the battery compartment lid. (Check to make sure the battery wires are not kinked.)
Connect the backup Chamberlain garage door opener to the power.
The Garage Door Opener battery will be fully charged and ready for testing after 24 hours. Open the garage door after unplugging the backup system. The door will open more slowly than usual if the battery is not completely charged.
Reconnect the electricity to the Chamberlain Garage Door System.

In addition to that, there is another topic of how to reprogram the chamberlain garage door opener in detail. Find it here:

You may get replacement Chamberlain garage door opener batteries at Amazon:

Chamberlain/Lift Master/Craftsman 4228 Replacement Battery

Chamberlain 41A6357-1 Garage Door Opener Replacement Battery

ML5-12 – 12V 5AH Chamberlain 41A6357-1 Garage Door Opener Battery

How long does Chamberlain backup battery last?

Q: What is the life expectancy of a Chamberlain battery backup system? A: With normal usage, a battery will last approximately 1-2 years.

What size battery does a Chamberlain garage door opener take?

Replace ONLY with 3V CR2032 coin batteries. DO NOT recharge, disassemble, heat above 212°F (100°C) or incinerate.

Is battery backup necessary for garage door opener?

Be Ready. Beginning July 1, 2019, all newly sold or installed garage door openers in residential applications are required to have battery backup. It's an important safety feature that should be added to every home, regardless of where you live.