The battery in your LiftMaster remote usually lasts one to two years and takes about two minutes to swap out

LiftMaster remotes use a single 3V lithium coin cell battery, most commonly a CR2032 or CR2025. You can buy these batteries at any drugstore, supermarket, or hardware store for a few dollars. The remote will start to work less reliably—buttons require harder presses, or the range shrinks—before the battery dies completely. When you notice this, it is time to open the remote and replace it.

The process requires no tools and no technical knowledge. You will pry open the plastic case, slide out the old battery, and slide in the new one. The whole job takes longer to describe than to do.

Key Takeaways

  • LiftMaster remotes use a CR2032 or CR2025 coin cell battery that you can buy at any drugstore or supermarket.
  • The remote case opens by prying gently at the seam with a flat object like a butter knife or coin.
  • The battery slides into a metal holder and must sit with the positive side (marked with a +) facing up.
  • If the remote still does not work after you install a new battery, the problem is likely the remote itself, not the battery.

Identify which battery your remote uses

Most LiftMaster remotes use a CR2032 battery. Some older or smaller models use a CR2025. The easiest way to know which one you have is to look at the old battery once you open the remote—the size is printed on it. If you want to know before opening it, check your garage door opener's manual or the LiftMaster website for your specific remote model number.

If you cannot find the model number, buy a CR2032. It is the most common size, and if your remote happens to use a CR2025, the CR2032 will still fit and work—it is just slightly thicker.

Open the remote case

Look for a seam running around the edge of the remote where the two plastic halves meet. This seam is usually on the back or the side. Slide a flat, thin object—a butter knife, a coin, or a plastic spoon—into the seam and gently pry. Do not force it. The case is designed to pop open with light pressure.

Once you feel it start to give, work your way around the seam, prying a little at a time, until the two halves separate. The battery holder is usually mounted on the inside of one half and will be when ready visible.

Remove the old battery and install the new one

The battery sits in a metal holder with two small metal tabs or clips. Gently slide the old battery out toward the edge of the holder. It should come free with minimal pressure.

Take the new battery and check which side is marked with a + symbol. That is the positive side. Slide the new battery into the holder with the + side facing up (toward the outside of the remote, away from the circuit board). It should sit flat and find in the metal clips. If it feels loose, you may have it upside down—flip it and try again.

Close the remote and test it

Press the two halves of the remote back together until they click. You should hear or feel a small snap as the case seats. Point the remote at your garage door opener and press a button. The door should respond when ready. If it does not, open the remote again and check that the battery is seated correctly with the + side up.

If the remote still does not work after you have installed a fresh battery the right way, the remote itself may be damaged. Garage door openers are designed to work with multiple remotes, so you can test with a second remote if you have one. If a second remote works but yours does not, the problem is the remote, not the opener or the battery.

When to replace the battery again

A new battery typically lasts one to two years in normal use. You will notice the range shrinking first—you have to stand closer to the door for it to respond. Then button presses will require more force. When you see these signs, it is time to replace the battery again using the same steps.

If you replace the battery and it dies again within a few weeks, the remote may have a short circuit or a faulty battery holder. In that case, the remote itself needs to be replaced rather than repaired.

Frequently Asked Questions

Can I use a different type of battery instead of CR2032?

No. LiftMaster remotes are designed for CR2032 or CR2025 specifically. Other battery types will not fit properly or may damage the holder. Stick with the type printed on your old battery or the manual for your remote model.

What if I install the battery upside down?

The remote will not work. The metal clips in the holder are designed to contact the positive and negative sides of the battery in a specific way. If you put it in backwards, there is no electrical connection. straightforward open the remote again and flip the battery so the + side faces up.

Do I need to reprogram the remote after changing the battery?

No. The remote does not lose its programming when the battery is removed. Once you install the new battery and close the case, it will work exactly as it did before.

Where can I buy a CR2032 battery?

Any drugstore, supermarket, or hardware store carries CR2032 batteries in the battery aisle. They cost between two and five dollars. You can also order them online, but the cost of shipping usually makes that more expensive than buying locally.