Replace the battery in your LiftMaster remote in under two minutes
Most LiftMaster remotes use a single 3V coin-cell battery, usually a CR2032 or CR2025, that you can swap out without tools. Open the remote case by sliding or prying the two halves apart, note which side the battery sits on, remove the old battery, and snap in the new one with the flat side facing up. The whole job takes less time than finding where you left the remote.
The exact steps depend on your remote model — some have a sliding case, others have a seam you pry open — but the battery itself is always the same type and always goes in the same way. Once you close the case, test the remote by pressing the button while standing near your garage door opener. If nothing happens, the battery may be installed backwards, or the remote may need a different repair.
Key Takeaways
- LiftMaster remotes use a CR2032 or CR2025 coin-cell battery that costs two to five dollars and lasts two to four years depending on use.
- Open the remote case by sliding the two halves apart or prying gently along the seam with a flat tool like a butter knife or coin.
- The battery sits in a small metal holder and must be installed with the flat side facing up toward the button side of the remote.
- Test the remote when ready after closing the case by pressing the button within ten feet of the garage door opener.
Locate the battery compartment and open the case
Hold the remote in both hands with the button side facing you. Look along the seam where the two plastic halves meet — most LiftMaster remotes have a thin line running around the edge. Some models have a small slot or notch on one side that lets you slide the halves apart by pushing with your thumb. Others require you to pry gently along the seam.
If your remote has a sliding case, push your thumb into the slot and slide the top half toward you or away from you until the two halves separate. If your remote has a sealed case, use a flat tool — a butter knife, coin, or plastic spoon — to gently pry along the seam. Start at one corner and work your way around, explore light pressure so you do not crack the plastic. The case will pop open once you have loosened it enough.
Remove the old battery and note its position
Once the case is open, you will see a small metal battery holder with a coin-shaped battery sitting inside. The battery is usually held in place by a metal clip or spring on one side. Before you remove it, look at which direction the flat side is facing — this matters when you install the new battery.
Gently pry the battery out of the holder using your fingernail or a plastic tool. Do not use a metal tool that could scratch the circuit board. If the battery is stuck, wiggle it gently side to side while lifting. Once the old battery is out, set it aside. You do not need to clean the holder or the circuit board unless you see corrosion — a white or blue-green crusty buildup that means the battery has been leaking.
Install the new battery the correct way
Before you open the new battery, check the packaging to confirm it is a CR2032 or CR2025 — these are the two most common sizes for LiftMaster remotes. If you are not sure which size your remote uses, compare the old battery to the new one. They should be the same diameter and thickness.
Hold the new battery with the flat side facing up — the side with numbers and letters printed on it. This is the positive side and must face toward the button side of the remote. Slide the battery into the metal holder and press down gently until you hear or feel a small click. The metal clip should hold it in place. If the battery falls out when you tilt the remote, it is not seated correctly — remove it and try again, making sure the flat side is facing up.
Close the case and test the remote
Align the two halves of the remote and press them together firmly until they snap into place. If your remote has a sliding case, push the top half back into position until it stops. You should hear a small click or feel resistance when the case is fully closed. Do not force it — if the halves do not come together smoothly, the battery may be sticking out and preventing the case from closing. Open the case again and reseat the battery.
Stand within ten feet of your garage door opener and press the remote button. The door should move, or the light should turn on, depending on what button you pressed. If nothing happens, open the case and check that the battery is facing the correct direction — flat side up. If the battery is correct and the remote still does not work, the remote may have a different problem that a new battery will not fix.
Where to buy replacement batteries
CR2032 and CR2025 batteries are sold at most drugstores, supermarkets, hardware stores, and online retailers. A single battery usually costs between two and five dollars, though buying a pack of four or eight brings the per-battery cost down. Check the packaging to confirm the battery type matches what your remote needs.
If you have lost the old battery or cannot remember the size, bring your remote to a store and compare it to the batteries on the shelf. The battery holder inside your remote is small enough that the wrong size will not fit, so you cannot accidentally install a battery that is too large. Some stores, including pharmacies and hearing aid centers, will replace the battery for you for a small fee if you do not want to do it yourself.
What to do if the remote still does not work
A new battery fixes most remotes that have stopped responding, but not all. If the remote still does not work after you have installed a fresh battery with the correct orientation, the problem is usually one of three things: the circuit board is damaged, the button contacts are worn out, or the remote is out of range of the garage door opener.
Test the remote by standing very close to the garage door opener — within three feet — and pressing the button. If it works at close range but not from far away, the remote may have a weak transmitter rather than a dead battery. If it does not work at any distance, the circuit board or button may be faulty. In that case, you will need to replace the entire remote rather than just the battery. LiftMaster sells replacement remotes that match most garage door openers, and a technician can program a new remote to your door in a few minutes.
Frequently Asked Questions
How long does a LiftMaster remote battery last?
A CR2032 or CR2025 battery typically lasts two to four years in a garage door remote, depending on how often you use it. If you press the button several times a day, the battery will drain faster than if you use the remote once or twice a week. Cold weather can also shorten battery life because the chemical reaction inside the battery slows down in low temperatures.
Can I use a different size battery if I cannot find the right one?
No. CR2032 and CR2025 batteries are different thicknesses, and using the wrong size will either not fit in the holder or will not make proper contact with the metal clip. Always match the battery size to what your remote originally used. If you cannot find the exact size, most stores can order it for you, or you can buy a replacement remote instead.
What does it mean if the battery is corroded?
Corrosion — a white, blue, or green crusty buildup — means the old battery has been leaking chemicals inside the remote. Gently wipe away the corrosion with a dry cloth or cotton swab before installing the new battery. If the corrosion is heavy or the remote still does not work after cleaning, the circuit board may be damaged and the remote may need to be replaced.
Do I need to reprogram the remote after changing the battery?
No. Changing the battery does not erase the remote's programming. Once you install the new battery and close the case, the remote should work when ready without any additional steps. If the remote does not work after a new battery, the problem is not the programming.
Can I replace the battery in a LiftMaster keypad or wall button?
Yes, if your keypad or wall button is wireless and battery-powered. The process is the same — open the case, remove the old battery, and install a new one with the flat side facing up. Wired wall buttons that plug into the garage door opener do not have batteries and cannot be repaired this way.