Replacing battery on chamberlain garage door opener

804302, 23-289, 23-289B, 23-289A, 23289, BP4-12, BP4.5-12, BP5-12, CA1240, CFM12V4.6M, DG12-5, ES4-12, GP1245, GP1250, HR5.5-12, HR1221WF2, JC1240, LC-R125P, LC-RB124P, LC-R125P, LCR-12V4BP, LCR-12V5P, NP4-12, NP4-12P, NPH5-12, NPX-25, PC1250, PE4-12R, PE4.5-12R, PE12V4.5F1, PE12V4.0, PS-1242, PS-1250, PS1250, PS-1252, PXL12050, RBC45, SLA-12V4-5, UB1245, UB1250, UB1250A, WP4-12, WP4.5-12, WP5-12

Table of Contents Show

How to Change Chamberlain Garage Door Opener Battery
How long does a Chamberlain garage door opener battery last?
Do you have to reprogram garage door opener when changing battery?

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.

How to Change Chamberlain Garage Door Opener Battery

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:

How long does a Chamberlain garage door opener 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. 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 at a summer or winter home.

Do you have to reprogram garage door opener when changing battery?

After replacing the batteries, you may need to reprogram your remote with your garage door opener. With newer LiftMaster garage door models, you can do this with the “learn” button. To find the exact process and specifics, consult your manual for instructions and further information.