LiftMaster 485LM Integrated Battery Backup System (12V)
Power When You Need It Most. Don’t let a thunderstorm or grid failure lock you out of your home. The LiftMaster 485LM Battery ensures your garage door opener continues to function even when the power goes out. Designed specifically for LiftMaster and Chamberlain DC motor operators, this rechargeable battery sits inside your motor housing (or wall mount unit) and automatically kicks in the moment electricity is lost. It provides enough power to open and close your door multiple times, ensuring you can get your car in or out safely during an emergency.
485LM
LiftMaster 485LM Integrated Battery Backup System (12V)
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Emergency Access: Operates the garage door for up to 24 hours or 20-50 cycles (depending on door weight) after power loss.
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Seamless Integration: Fits perfectly inside compatible LiftMaster motor housings with no external wiring mess.
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Audible Alerts: The opener will beep to alert you when the battery is in use or when it needs to be replaced, so you are never caught off guard.
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Essential for Safety: Ensures you can exit your home quickly in an emergency without struggling with the manual release cord.
See all the specs and more at the Manufacturer’s Website:
LiftMaster 485LM Integrated Battery Backup (12v)
LiftMaster 485LM Integrated Battery Install Manual
Specifications
| Voltage | 12V DC | Capacity | 4.5 AH (Amp Hours) | |
| Battery Type | Sealed Lead Acid (SLA) | Power Cycles | 20-50 Cycles (during outage) | |
| Dimensions | 3.5″ x 2.75″ x 4″ | Weight | 3.5 lbs | |
| Compatibility |
LiftMaster 8550 / 8550W / 85503 / 87504-267 LiftMaster 8500 / 8500W / 98022 (Wall Mount) LiftMaster 8360 / 8360W / 8160W / 81602 New 2025 Models: 6690L, 4690L, 6580L, 2420L |
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