---
product_id: 213723954
title: "New LiftMaster 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550"
brand: "liftmaster"
price: "867 Lei"
currency: RON
in_stock: true
reviews_count: 8
url: https://www.desertcart.ro/products/213723954-new-liftmaster-485lm-battery-backup-for-garage-door-openers-3840
store_origin: RO
region: Romania
---

# Reliable power backup 20 emergency openings Screw-in easy install New LiftMaster 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550

**Brand:** liftmaster
**Price:** 867 Lei
**Availability:** ✅ In Stock

## Summary

> 🔋 Never get stuck in the dark—power your peace of mind!

## Quick Answers

- **What is this?** New LiftMaster 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550 by liftmaster
- **How much does it cost?** 867 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/213723954-new-liftmaster-485lm-battery-backup-for-garage-door-openers-3840)

## Best For

- liftmaster enthusiasts

## Why This Product

- Trusted liftmaster brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **UL Certified Safety:** Built to meet UL standards, ensuring dependable and safe backup power when you need it most.
- • **Compact & Lightweight:** At just 3.67 pounds and 3x4x4 inches, it fits discreetly without cluttering your garage space.
- • **Power Through Outages:** Keep your garage door operational with up to 20 emergency openings during blackouts.
- • **Tailored Compatibility:** Specifically engineered for LiftMaster models 3840, 3850, 8360, and 8550 for seamless integration.
- • **Effortless Installation:** Screw-in design means no hassle—get protected in minutes without extra tools.

## Overview

The LiftMaster 485LM Battery Backup is a UL-certified, screw-in backup battery designed for select LiftMaster garage door openers. It delivers up to 20 emergency openings during power outages, ensuring your garage remains accessible when it matters most. Compact and lightweight, it installs easily and integrates perfectly with models 3840, 3850, 8360, and 8550.

## Description

The LiftMaster 485LM Battery Backup (ASIN B07Q799TCJ) is a durable, screw‑in backup battery module designed specifically for select LiftMaster garage door opener models—including 3840, 3850, 8360, and 8550—to ensure reliable operation during power outages by providing up to 20 emergency openings .

## Features

- back up battery

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Installation Type | Screw-In |
| Recommended Uses For Product | backup power for garage door openers during power outages |
| Specification Met | UL |
| UPC | 368093610583 |
| Manufacturer | no |
| Item Weight | 3.67 pounds |
| Product Dimensions | 3 x 4 x 4 inches |
| Item model number | 485LM |
| Item Package Quantity | 1 |
| Included Components | Battery |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Metal
- **Brand:** LiftMaster
- **Color:** Black
- **Exterior Finish:** Black
- **Product Dimensions:** 3"L x 4"W x 4"H

## Images

![New LiftMaster 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550 - Image 1](https://m.media-amazon.com/images/I/31GLjDtlOgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ New Liftlaster 485LM Battery Backup
*by N***Y on August 9, 2025*

Fit perfect in the garage door opener. Easy to replace. Works great

### ⭐⭐⭐⭐⭐ Garage door Battery
*by S***S on June 12, 2025*

This was a direct replacement battery for the garage door opener, worked as stated, easy to install.

### ⭐⭐⭐⭐⭐ Easy and simple
*by B***F on August 31, 2025*

My battery died. Bought this to replace it. Blap! Worked great, changed out in about 2 seconds. No worries.

## Frequently Bought Together

- New LiftMaster 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550
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- 3-IN-ONE Garage Door Lubricant with SMART STRAW SPRAYS 2 WAYS, 11 OZ

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**Shop now:** [https://www.desertcart.ro/products/213723954-new-liftmaster-485lm-battery-backup-for-garage-door-openers-3840](https://www.desertcart.ro/products/213723954-new-liftmaster-485lm-battery-backup-for-garage-door-openers-3840)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-24*