

🔋 Power through outages like a pro — never get stuck outside again!
The Chamberlain LiftMaster 485LM Battery Backup is a 12V, 4.5 Amp OEM replacement battery designed to keep your garage door opener functional during power failures. Compatible with multiple LiftMaster models and major retailer units, it offers easy DIY installation and reliable, long-lasting performance to ensure uninterrupted access to your home.
| ASIN | B001T3WHZ8 |
| Amperage | 4.5 Amps |
| Batteries | 1 12V batteries required. |
| Best Sellers Rank | #93,775 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #75 in Garage Door Opener System Parts |
| Brand | CHAMBERLAIN |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,525) |
| Date First Available | February 13, 2009 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.13 pounds |
| Item model number | 485lm |
| Manufacturer | Liftmaster |
| Manufacturer Part Number | 485lm |
| Model | 475lm |
| Product Dimensions | 4 x 4 x 4 inches |
| Special Features | Allows you to still come and go through your home’s primary access point, your garage door, when the power goes out., The Liftmaster 485LM EverChargeTM Battery Backup System can be used with the Liftmaster Model 3850(available separately, |
| Voltage | 12 Volts (DC) |
E**T
Good for 84602 model
It works great with my Liftmaster opener (model 84602). The original battery lasted three years, so I'm hoping this one will last longer.
D**N
Easy installation
The main thing is that it was the right size and was fairly easy to install…thank you
D**E
Works perfectly well.
This is battery was a perfect replacement for the original Liftmaster battery which was inoperable after about 5 years, the expected time of its demise. It looked new, even if its manufacture date was about a year old which is no problem for a lead battery that has not seen any service, and it was in a Liftmaster box, with labelling on the battery which looked exactly like the original. Both are made in China, and it seems either original or made by the same company that sells directly to Lifemaster. Of course, since I just installed it, I can't comment on duration of life, but its surface voltage was correct, and it operates the door without problem with the AC disconnected from the motor. The battery was shipped promptly and came in good time, properly packaged. Based on service rates where I live, between the call and the extra markup on the battery if you buy it through dealers or servicemen, you'll probably save $150-$200 to do it yourself which is an absolute snap. I think any one of my five cats could have done it: Just remove one Phillips screw, pull the battery half out, disconnect the terminals, insert new battery halfway in the housing, reconnect the terminals, which are size coded to you can't get it wrongly, and push the battery home, close the door and reinsert the single screw. It takes all of a few minutes tops. Because this is a low voltage circuit, you don't need to turn off the power, and you are in no proximity to high voltage wiring. After you have successfully installed the battery, the low voltage beeping should go away, and you should have no more orange or red warning lights on the chassis. After you have had the battery in service for 24 hours, disconnect the motor by pulling out the AC power cord, simulating a power failure, and run the door up and down a couple of times to be sure that the battery is working properly with a load BEFORE you throw the shipping box away. BOTTOM LINE: ENTHUSIASTICALLY RECOMMENDED WITHOUT RESERVATION.
S**N
AAA Security Depot
Gonna indicate that I purchased this battery from AAA Security Depot as Amazon lumps all reviews for this same product from different vendors/sellers. Product was genuine OEM and exactly as file photo showed down to the box. Ordered the battery in 1/3/24 and the battery manufacture date was 12/23, literally only one month old and fresh! Great price and fast shipping to Hawaii. Definitely recommend this product and seller.
L**D
Plug and Play
Exact replacement for the Liftmaster. Silenced the annoying alarm after loss of power for a few days. System is working well with the new backup battery and alarm is silent. I would recommend this for replacement if required.
Q**M
Just like the original
This Chamberlain Liftmaster 485LM Battery arrived relatively fast and in good condition. The battery is identical to the original that was installed 3 years ago when my home was constructed. I ordered 2 of these batteries because one of my Liftmaster garage door openers (GDO) began beeping once every 30 seconds - very annoying. So, I pulled out the manual, identified the problem, and ordered one for each of my 2 GDOs. The Chamberlain 485LM batteries that I received are the same size and rating as the one battery that died. I replaced both batteries and both GDO's are happy. Hopefully, they last another 3 years like the originals. I highly recommend this replacement battery.
A**D
Questions remain
The battery arrived on time. When checking the manufacturing date on the box I learned that the battery is already 9 months old. Not happy about this as it raises questions on longevity; however, when buying the battery I also purchased the 2 year protection plan. The installation was easy. I was hoping the box would provide suggestions on how to dispose of the old battery but it did not. The battery is working but I am not in the position of weighing in on longevity or value for money although I do feel the purchase price was a bit much.
J**H
Perfect
Came in clutch when our old battery for our garage died. Really easy to replace.
C**N
Exactement ce qu'il me fallait. Excellent. Et vraiment pas dispendieux.
J**S
muy bien parte original y rápido el envio . . . . . . . . . . . . .
P**R
very nice works great , great price, looked just like the original one we took out.
C**R
Easy installation. Product arrived as I expected.
F**R
La batterie que j’ai reçu est étiquetée comme ayant été fabriquée en 2017, elle a été très longue à recharger par mon ouvre-porte (environ 72 heures), néanmoins elle fonctionne bien. On verra a l’usage combien de temps elle durera. J’ai conservée l’original pendant 7 ans.
Trustpilot
2 months ago
2 months ago