---
product_id: 692644616
title: "LiftMaster New 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550"
brand: "liftmaster"
price: "$337.12"
currency: USD
in_stock: true
category: "Lift Master"
url: https://www.desertcart.us/products/692644616-liftmaster-new-485lm-battery-backup-for-garage-door-openers-3840
store_origin: US
region: United States of America
---

# LiftMaster New 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550

**Brand:** liftmaster
**Price:** $337.12
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** LiftMaster New 485LM Battery Backup for Garage Door Openers 3840 3850 8360 8550 by liftmaster
- **How much does it cost?** $337.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/692644616-liftmaster-new-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

## 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 |
| Item model number | 485LM |
| Manufacturer | no |
| Product Dimensions | 7.62 x 10.16 x 10.16 cm; 1.71 kg |

## Product Details

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

## Images

![LiftMaster New 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.us/products/692644616-liftmaster-new-485lm-battery-backup-for-garage-door-openers-3840](https://www.desertcart.us/products/692644616-liftmaster-new-485lm-battery-backup-for-garage-door-openers-3840)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-20*