LiftMaster Battery Backup for Garage Door Openers

The backup battery for the 3840, 3850, 8360, and 8550 models is designed to provide power when the main electricity supply is interrupted. With this backup battery, the opener can be operated up to 20 times without the need for a power source.

In the event of a power outage, the backup battery will automatically kick in, ensuring that you can still open and close your garage door. This feature is particularly useful in emergency situations or during power failures, as it allows you to maintain access to your garage even when the main power is unavailable.

The backup battery is a critical component of these garage door opener models, as it adds an extra layer of reliability and convenience to the system. Without the backup battery, the opener would be rendered useless during a power outage, leaving you unable to access your garage.

One of the key benefits of the backup battery is its ability to provide up to 20 cycles of operation without the need for external power. This means that even if the power is out for an extended period, you can still open and close your garage door multiple times before the battery needs to be recharged or replaced.

It's important to note that the backup battery is designed to be a temporary solution during power outages, and it should not be relied upon as a permanent power source. The battery will eventually need to be recharged or replaced, depending on the frequency and duration of power failures in your area.

To ensure that the backup battery is always ready to perform when needed, it's essential to regularly check its charge level and replace it if necessary. Most manufacturers recommend replacing the backup battery every few years, or as soon as it shows signs of weakening performance.

Overall, the backup battery feature in the 3840, 3850, 8360, and 8550 garage door opener models is a valuable addition that can provide peace of mind and convenience during power disruptions. By maintaining a reliable and accessible garage door system, even when the main power is out, these models offer a level of security and convenience that can be especially important in emergency situations or during extended power outages.

product information: