---
product_id: 213723954
title: "New LiftMaster 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550"
price: "584.47 DT"
currency: TND
in_stock: true
url: https://www.desertcart.tn/products/213723954-new-liftmaster-485lm-battery-backup-for-garage-door-openers-3840
store_origin: TN
region: Tunisia
---

# Compatible with top LiftMaster models 20 emergency openings on backup power Screw-in design for effortless installation New LiftMaster 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550

**Price:** 584.47 DT
**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
- **How much does it cost?** 584.47 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/213723954-new-liftmaster-485lm-battery-backup-for-garage-door-openers-3840)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** Screw-in battery module installs in minutes—no hassle, no downtime
- • **Compact & Durable:** Sleek metal design fits seamlessly without adding bulk
- • **Power When It Counts:** Up to 20 emergency garage door openings during outages
- • **Tailored Compatibility:** Engineered exclusively for LiftMaster models 3840, 3850, 8360, and 8550
- • **UL Certified Reliability:** Safety and performance you can trust, backed by UL certification

## Overview

The LiftMaster 485LM Battery Backup is a UL-certified, screw-in battery module designed to keep your garage door opener operational during power outages. Compatible with select LiftMaster models (3840, 3850, 8360, 8550), it delivers up to 20 emergency openings, ensuring uninterrupted access and security when you need it most.

## 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 |
|---------------|-------|
| ASIN | B07Q799TCJ |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #46,500 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #36 in Garage Door Opener System Parts |
| Certification | UL |
| Color | Black |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,242) |
| Date First Available | May 4, 2019 |
| Included Components | Battery |
| Installation Method | Screw-In |
| Item Package Quantity | 1 |
| Item Weight | 3.76 pounds |
| Item model number | 485LM |
| Manufacturer | no |
| Material | Metal |
| Part Number | 485LM |
| Product Dimensions | 3 x 4 x 4 inches |

## Product Details

- **Brand:** LiftMaster
- **Color:** Black
- **Exterior Finish:** Black
- **Material:** Metal
- **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/61UXV2abIgL.jpg)

## Frequently Bought Together

- New LiftMaster 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550
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**Shop now:** [https://www.desertcart.tn/products/213723954-new-liftmaster-485lm-battery-backup-for-garage-door-openers-3840](https://www.desertcart.tn/products/213723954-new-liftmaster-485lm-battery-backup-for-garage-door-openers-3840)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-12*