If your garage door opener suddenly stops working, one of the first things to check is the battery. Whether it’s for the opener motor itself or the remote, that small power source plays a big role. In this guide, we’ll walk through everything you need to know about garage door opener batteries to keep your door running smoothly.
The garage door opener battery is what powers the motor unit in a backup situation or powers your remote or keypad to send signals. When the power goes out or your remote isn’t working, a dead battery could be the reason. Having a working battery for garage door opener means you won’t get stuck outside or trapped in your garage.
Think of it like this: your garage door opener is only as reliable as its battery. If the battery fails, even the most high-tech opener won’t be able to help you. That’s why regular battery maintenance and understanding the right type to use is so important.
Types of Batteries You Might Need
Not all garage doors use the same battery. Here are the main types:
- 9V batteries – Often used in keypads
- Coin cell batteries (like CR2032) – Common in remotes
- AA or AAA – Some wall units and newer remotes
- 12V batteries – Older remotes or specialty openers
- Rechargeable backup batteries – Found inside the opener unit itself
You should always check the manual that came with your opener or remote before buying a new battery. If you don’t have the manual, look for a battery label on the remote, wall pad, or inside the opener housing.
Some newer openers even have their battery type listed right on the LCD screen or in a smart app. Handy, right?
Here’s a quick breakdown:
- Remote control batteries: Typically last 1-2 years
- Keypad batteries: About 1-2 years
- Backup batteries in opener units: Last about 3-5 years depending on usage and model
You might notice your remote isn’t working from the usual distance, or the light on your keypad looks dim. These are usually early warnings that it’s time to swap in a new battery.
Some smart garage door systems will alert you when the battery is low, either through a smartphone app or by flashing lights on the motor unit.
How can you tell when it’s time to switch batteries? Here are some signs:
- The remote only works when very close to the door
- The keypad lights up but doesn’t work
- The opener beeps or shows a battery warning light
- Your door won’t open during a power outage
- Your smart garage app sends a battery alert
These are all good indicators that your garage door opener battery might be on its last legs. Don’t wait until the battery is fully dead. A proactive swap saves stress later.
For Remotes and Keypads:
- Slide or unscrew the battery cover
- Remove the old battery
- Insert a fresh one of the same type
- Test the device
For Backup Batteries in Opener Units:
- Unplug the opener for safety
- Open the panel to access the battery compartment
- Disconnect and remove the old battery
- Plug in the new one, matching polarity
- Close the panel and plug the opener back in
Tip: Take a picture before removing the battery if you’re unsure of the layout. That way, you have a reference to reinstall it correctly.
Also, remember to reset the unit if your model requires it after a battery change. Check the manual to see if that step is needed.
Be sure to dispose of old batteries properly! Many hardware stores and recycling centers accept used batteries.
Tips To Extend Battery Life
Here’s how to keep your batteries going strong:
- Keep your opener and remote clean and dry
- Don’t store remotes in extreme heat or cold
- Replace batteries before they fully die to avoid emergencies
- Use high-quality, name-brand batteries
- Disconnect the battery when storing an unused opener for a long time
- Avoid mixing old and new batteries in the same device
It may seem small, but these habits can add years to your battery’s life and keep your system running smoothly.
If the power goes out and your garage door opener won’t work, a built-in garage door opener battery backup can help. These systems automatically kick in when electricity fails, allowing you to open and close the door several times.
Without a battery backup, you’ll need to pull the manual release cord (usually a red handle hanging from the trolley) and operate the door by hand. Just be sure the door isn’t stuck or damaged before doing this.
Having a fresh backup battery means you can avoid this hassle during a storm or blackout.
If you’re not sure which battery to buy, check the following:
- Your owner’s manual
- The old battery label
- Manufacturer’s website
- Ask a local professional (like us!)
If your garage system is more than 10 years old, it might be worth checking with a professional to see if it’s time for an upgrade. Some modern systems use lithium-ion rechargeable packs that last longer and perform better than older models.
What kind of battery does a garage door opener take?
It depends on the opener. Most use coin cell batteries (like CR2032), 9V batteries, or 12V batteries for remotes and keypads. Some have built-in rechargeable backup batteries.
Do all garage door openers use the same battery?
No, they don’t. Battery types vary depending on the brand and model of your opener. Always check the manual or the battery compartment for the correct type.
What battery does my garage remote need?
Most garage door remotes use coin cell batteries such as the CR2032, but some models may use AA, AAA, or 12V batteries. Check your remote to find out.
How do I change the battery in my garage door remote?
Open the battery cover (slide or unscrew it), take out the old battery, insert a new one of the same type, and replace the cover. Test the remote to make sure it works.
Batteries may be small, but they make a big difference in your garage door system. Stay ahead of problems by replacing them regularly and keeping spares on hand.
Need help changing or testing your garage door opener battery? Call Overhead Door Company of Bellingham at (360) 734-5960. We’re happy to help!
Contact us today and stay powered up!
