Question about liftmaster 485LM EverCharge Battery Backup

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How do I change the battery on lift master pro

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You can purchase a replacement battery assembly from Amazon.com for $69 (I just replaced mine). If your battery backup is mounted on top of your opener, you simply unplug the backup white plug from the back lower right corner of the opener. There are two screws holding the battery pack to the opener, one on each side which need to be removed with a Phillips screwdriver and saved to install the new battery pack. Then simply lift off the old back up power suppl (careful, it's about 8+ lbs) and install the new one, being careful to install the screws snugly and plug in the new backup. (Ceiling mounting is simply unplugging the backup unit and removing the two mounting screws from the ceiling; then reversing for the new unit) The green light will start flashing rapidly showing its charging and will do so for several days. Then it will turn solid green showing a full charge and you are set for years of backup readiness. Some words of caution: Some places sell only the replacement batteries. They do NOT have the same connections as the original batteries. So unless you are willing to purchase crimp-on connectors and do your own wiring, don't waste your money. Plus, if the electronic circuitry is bad and not just the batteries, you will waste money and time. My suggestion is buy the EverCharge as a unit and save the headaches. I did.

Posted on May 24, 2014

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Posted on Jan 02, 2017

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