Battery Backup for LiftMaster Garage Door Openers 485LM

Battery Replacement Instructions for Easy DIY

Disconnecting power to the opener is the first step. Using a Phillips head screwdriver, remove the battery cover on the motor unit. Discard the old battery and partially insert the new battery into the motor unit, ensuring the terminals are facing outward. Connect the red (+) and black (-) wires from the motor unit to the corresponding terminals on the battery. Replace the battery cover and reconnect the power. This simple process allows you to continue accessing your garage door even when the power is out.

The Liftmaster 485LM battery backup system, with the Chamberlain part number 4228, is a 100% OEM (Original Equipment Manufacturer) product. This means it is a genuine replacement part, directly supplied by the Liftmaster factory. It is compatible with Sears and Home Depot garage door battery backups, making it a versatile option for a wide range of models.

The new production dates on these battery backup systems ensure that you are getting a fresh, up-to-date product. This is particularly important for maintaining the optimal performance and longevity of your garage door's backup power supply.

The compatibility of this battery backup extends beyond the Liftmaster 485LM model. It is also designed to work with other Liftmaster battery backup units that feature a slide-in battery, such as the 385 and 855 models, as well as the latest iterations of these systems.

By having a reliable battery backup in place, you can rest assured that your garage door will continue to function even during power outages. This not only provides convenience but also enhances the overall security of your home, allowing you to come and go as needed, regardless of the external conditions.

Investing in a quality, OEM-supplied battery backup system like the Liftmaster 485LM is a wise choice for any homeowner. It ensures that your garage door remains operational, even when the main power source is disrupted, providing you with peace of mind and uninterrupted access to your home.

Replacing the battery in your garage door opener is a straightforward task that can be easily accomplished with the provided instructions. By following the step-by-step guide, you can ensure that your backup power system is in optimal condition, ready to support you during those unexpected power outages.

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