How to Add Battery Backup to Garage Door Opener

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Garage door openers are life-changing devices that have made entering and exiting garages convenient. Your home’s electrical system powers these devices, and you likely don’t think about them unless there’s an issue and your garage door fails to open. But have you thought of what could happen during a power outage? 

You won’t be able to operate your garage door remotely. You’ll have to disengage it from the opener to initiate manual operation. If you can’t physically handle manual operation or the power goes out while you’re outside, getting back into your garage would be challenging. That’s where battery backups come in as crucial emergency solutions during power disruptions. This guide shows you how to add a battery backup to a garage door opener to continue using your garage door remotely.

What Is a Battery Backup?

The latest garage door openers have a built-in battery backup or a separate add-on unit connected to the opener’s wiring. While older opener models didn’t come with batteries as supplementary power sources, manufacturers now offer compatible batteries you can install separately. Alternatively, you can opt for newer models with backups that make adding and replacing the batteries more straightforward.

Why Is a Battery Backup Important?

Why Is a Battery Backup Important?

During a power outage, these batteries serve as backup power systems to operate the garage door. This means that if you’re inside or outside the garage during an outage, you can still open and close the door as usual. 

The State of California’s existing law emphasizes the importance of a battery backup. It demands that all automatic garage door openers manufactured, sold and installed after July 1, 2019, be equipped with one. The law was introduced in response to the devastating 2017 wildfires, which left many trapped in their homes with no power to operate their garage doors. These risks apply anywhere else.

How to Install a Built-in Battery

When shopping for garage door openers, you’ll notice that many recent models have built-in batteries. These are located inside the motor unit and require unscrewing the battery compartment to access and replace them. Here’s how to add battery backups to garage door openers with a built-in feature:

  • Unplug the opener: Unplug the opener from its power source (the outlet where the power cord goes). Alternatively, switch off the circuit breaker for the door opener. Doing that disconnects the opener from your home’s electrical system and prevents accidental electrocution when working on the motor unit.
  • Access the battery: You can access the battery compartment by removing the light cover and unlatching the access door to the battery compartment. In some makes, you need to unscrew the lower cover or housing to locate the battery screwed at the top of the housing. 
  • Unplug the battery: Unplug the positive and negative wires attached to the old battery. In some opener models with battery compartments, the red and black wires are outside, and you can detach them before pulling out the battery. In other models, the wires are inside the compartment, requiring sliding out the battery before unplugging the wires. For a model with a hanging battery, unplug the wires and remove the screws to free the battery.
  • Insert the new battery: Reconnect the wires to the new battery and insert it into the compartment or screw the battery back on and connect the wires.
  • Reassemble: Latch back the battery access door. Some will need securing with screws. Replace the light cover or screw the housing back in position. You want to test the garage door opener to ensure it functions well with the battery before plugging in the power cord to use electricity.

How to Install an Add-on Battery

Add-on batteries are separate units. Some brands are equipped with these batteries as part of the package when you purchase the garage door opener. You can also buy one separately if you own an older opener. The installation process for these batteries varies depending on the brand and age of the model. Follow these steps:

Check Your Manual

If you purchase a garage door opener with a separate battery, review the manual to familiarize yourself with the installation. The manual should guide you on where the battery goes, as some attach to the opener unit and mount while others require brackets. Checking the manual is even more important if you own an old opener model. You want to know if installing a backup battery is possible and which type is compatible with your model.

Prepare for Installation

As a safety precaution, you should never add battery backups to garage door openers when they are connected to the power source. Unplug the door opener from the grounded outlet to ensure safety before installing the backup battery.

Install the Battery

With the power disconnected, install the battery by following these steps:

  • Connect the wires: To avoid damaging your backup battery, you want to ensure correct connections. Remove the cover on your backup unit and connect the positive (red) and negative (black) wires. Then, replace the cover.
  • Mount the unit: Different batteries offer different mounting methods. Some can be mounted to the ceiling, others can be attached directly to the powerhead, and others can be attached to the opener mounting bracket using the battery’s mounting bracket. Ensure the connection cables are properly plugged into the backup unit and slide the unit into the installed bracket.
  • Connect to the powerhead: Look for the port where the connection cable goes in the powerhead. It should be marked to help you identify it. The user manual is a good guide in this step, as it will help you find the correct connection point. Plug in the cable to connect your backup battery to the powerhead.
  • Charge the battery: Before testing the battery to ensure it works, restore power to your garage door opener and leave it for at least 24 hours for the battery to charge. The battery automatically charges using the cable connected to the powerhead. 
  • Test the battery: To ensure there are no issues preventing the opener from working as usual, run it on the electrical system, then switch off power. Power off the opener by unplugging it from the grounded outlet or switching off the circuit breaker. Test your backup battery to open the door.
Contact King Door Company, Inc. for Garage Door Solutions

Contact King Door Company, Inc. for Garage Door Solutions

Battery backups are critical in the event of unexpected power outages. Since you can’t predict grid disruptions, installing a supplementary power source to run your garage door is the ideal proactive step. With newer units, adding battery backups is generally easy. Older units are less straightforward since you’re not sure if a battery backup is even applicable.

You don’t have to grapple with uncertainty when you can let garage door professionals help. King Door Company, Inc. has trained technicians who can deliver same-day and 24-hour emergency services for all garage door issues. Contact us today to schedule a service!

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