Posts Tagged ‘Internal Backup Battery Garage Door Opener’

Liftmaster 8550W- The Best Opener on the Market!

Written by Nick McGregor. Posted in Garage Door Openers in Plano, TX, Liftmaster 8550W

Liftmaster 8550W

My “Want List” for a Garage Door Opener…

With the features I want, it’s almost like buying a car! Here’s why –

I want a unit I can depend on (current unit chooses it’s own hours of operation!).

I want a unit that is quiet and smooth.

I want a unit where the manufacturer stands behind their product with a Lifetime Warranty on the motor and belt and at least 5 years on the parts.

I want bells and whistles!! (Safety features, Timer, Motion Detector, a back-up battery, etc)

Last, but not least, I want it to have Wi-Fi so I can control it from my phone wherever I am.

And that’s why I’m getting a LiftMaster 8550W Garage Door Opener.  It’s all this and more!!


Click Here to Learn More About the Revolutionary Liftmaster 8550W



By Nick McGregor, General Manager of Plano Overhead Garage Door

Garage Backup Battery in Plano, TX

Written by Nick McGregor. Posted in Batteries & Garage Door Openers in Plano, TX, Garage Door Openers in Plano, TX

battery backup

Does it need to be replaced?

Having a backup battery in your opener can be a huge lifesaver. If your power ever goes out or the power source to your opener stops functioning, the backup battery will activate allowing the opener to still function properly. If the backup battery is dead, this feature is useless. How can you tell if your battery is dead or going to die? Once the battery begins to die the opener unit will begin to beep, notifying you of the problem. Be sure to check that the beeping isn’t coming from a smoke detector or other electronic device. Once you have narrowed down the location of the beeping you are ready to replace your battery.

Where is the backup battery?

The location of the backup battery varies depending on the opener. The Liftmaster 8550 belt driven opener, for example, uses a 485LM backup battery located behind the light cover. Older models, the Jackshaft 8500, and heavy duty openers use the 475LM standby power system. The 475LM may be mounted either directly on top of the motor unit or secured on a structural support above it.

Replacing Battery Backup

Replacing the 485LM backup battery

When replacing the 485LM, disconnect the opener from the power source. Once the opener is unplugged, remove the light cover by gently pulling it away from the opener. With the light cover removed, unscrew the lightbulb giving you full access to the battery. Now, using a Philips head screwdriver, remove the plastic cover exposing the battery. Remove the old battery and discard (or we can discard of it for you). Partially insert the new battery into the motor unit with the terminals facing out. From this point, connect the red (+) and black (-) wires from the opener to the corresponding terminals on the battery. After completing those steps, replace the battery cover, lightbulb, and light cover.

Replacing the 475LM standby power system

Directly to the motor unit:

Position the 475LM directly on top of the opener with the power cord drawn out from beneath the battery, sitting firmly on top of the opener. Be sure to adjust the placement of the angle iron (the support system for the opener) so that it is out of the way of the battery installation.  Align the two screws

Secured to a structural support:

The 475LM can be mounted to either the ceiling or a wall within 3’ of the opener motor. Secure the battery in the desired position using the mounting holes on either side and the 1-1/2” lag screws provided.

Connecting the battery to the motor unit:

Before connecting your battery to the opener, be sure to unplug it from the power source. Connect the 475LM power cord to the end panel of the motor. Once the battery is connected to the opener, plug the opener back into the power source. This will allow the battery to activate causing all LED’s to turn on for 3 seconds. The green LED will flash notifying that the battery is installed properly and beginning to charge. Allow 24-48 for the battery to fully charge.

Need a backup battery?

Stop by our conveniently located showroom to replace your dead backup battery. Don’t want to do it yourself? Call our office at 972-422-1695 to schedule a time for one of our trained technicians to come out and install it for you!




By Nick McGregor, General Manager of Plano Overhead Garage Door

plano door logo Plano Overhead Garage Door
1100 N. Central Expy Suite #A
Plano, Texas 75074

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Sat: 9:00 - 1:00
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  • September 23, 2016:

    "We've used Plano Overhead many times since the late 1990's and have been pleased every time!"

    -Sally R.    Plano, TX
  • September 7, 1987:

    "Prompt, courteous, and took care of the job in a very professional manner.  The enthusiasm to do the job right was refreshing to say the least."

    -Jared F.    Richardson, TX
  • January 2, 2017:

    "The customer service of this company is great.  They go the extra mile to make things right.  Use this company.  They fix your problems correctly and have quick service too."

    -Richard S.    Dallas, TX
  • March 14, 1995:

    "Plano Overhead quickly diagnosed my problem, made the necessary repairs, and adjusted the door for proper operation.  All I can say is, again, thanks for the excellent service and very professional service personnel.  The cost was very reasonable as well!"

    -Lynn P.   McKinney, TX
  • December 4, 2006:

    "Great service! I couldn't be happier!  I'm just amazed that in today's hurry up, make a quick dollar and get out world, this kind of expert service and friendly attitude still exists.  I don't mind paying for this kind of service and attitude.  I'll never call anyone other than Plano Overhead!"

    -Steve S.   Wylie, TX
  • January 27, 2017:

    "My garage door spring broke this morning.  I had used Plano Overhead before and was really impressed with their customer service and the professionalism of their technicians.  They stand behind their work and their products.  I have always recommended them to people I know and will continue to do so!"

    -Mark Z.   Allen, TX
  • January 14, 2004:

    "Thank you for your timely and professional service and your reasonable prices!"

    -Emmett W.   Garland, TX
  • December 6, 1993:

    "As a small business owner myself, I would like to commend your company for taking the extra step many business fail to take these days. Please feel free to add me to your list of references."

    Johnathan T.    Plano, TX
  • March 12, 2011:

    "Great service, great price, great company."

    -Chris H.    Plano, TX
  • August 13, 2006:

    "I cannot believe I got a Thank You Note from you guys!  Your promptness, courtesy, sympathy, and efficiency all made my situation a little easier."

    Richard W.   Murphy, TX
  • June 27, 2013:

    "The entire process was fantastic.  I walked into their showroom, and a representative was more than ready to help!"

    -Tony B.    Plano, TX
  • February 23, 2017:

    "Technician arrived on time on very short notice.  He worked efficiently and completed work in about one hour.  He even took time to answer questions and go over the work!"

    -Viadhe T.    Carrolton, TX
  • May 7, 2014:

    "Everyone from the technicians to the receptionists are always so pleasant to deal with.  You will not be disappointed with this company!"

    -Betsy Y.    Allen, TX
  • May 30, 2015:

    "Service was great, very professional and helpful!"

    -Steve J.    Frisco, TX
  • August 8, 1997:

    "I appreciate the fast service.  It's great to find a company I can rely on.  I'll recommend you every chance I get!"

    Stephany R.   Richardson, TX
  • January 5, 2012:

    "It is great to find a local company that you can depend upon.  I will definitely recommend your company to others who may have problems with their garage door."

    -Christina L.     Allen, TX
  • October 31, 2014:

    "About as good an experience as you can get, the installer was professional about his business, showed up on time, and completed the job in the time estimated."

    -Mark M.     Frisco, TX
  • August 19, 2014:

    "Plano Overhead Garage Door runs their business the way consumers wish all businesses were run.  They are simply a premier service provider."

    -Arlene M.    Plano, TX
  • January 6, 2017:

    "Scheduling was very responsive both via email and over the phone.  They were very professional and timely during the install, and even programmed my vehicles to the garage door opener before leaving.  I will continue to hire Plano Overhead Door in result of my experience today and will highly recommend them to my neighbors!"

    -Jon M.    Plano, TX
  • June 17, 2014:

    "Punctual, knowledgeable, and fast."

    -Dawn H.    Richardson, TX
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