Garage Door Repair & InstallationOpen 24 Hours — 7 Days a Week
Anderson Garage Door Service
Call for Service
(203) 902-3902
Brands we service & repair

LiftMaster, Chamberlain, Genie, Wayne Dalton, Clopay, and Amarr.

LiftMaster / Accessory reference

LiftMaster 485LM

LiftMaster 485LM: Battery-backup component described for LiftMaster 3850, 8360 and 8550 openers.

US source scopeUpdated 2026-09-12Independent Anderson reference

Match the whole number.

Manufacturer identifier: 485LM. Keep every character when comparing it with your label or paperwork. A similar number does not establish the same component.

Values apply to the exact identifier and scope in the cited source.
Supplier-stated detailBattery-backup component described for LiftMaster 3850, 8360 and 8550 openers.
View source and citation details
Selection limitationThe list does not establish W, P or other suffix variants. Battery voltage, capacity, chemistry and connector details are unspecified; ratings from 41B591 do not apply by inference.
View source and citation details

Documented fitment & exclusions

Read the exact equipment or component, market, production and variant limits in every row. An omitted pairing has not been verified by this reference.

Source statements and their exact conditions. Use the checker below to compare equipment or a component.
Equipment or component / relationshipEvidence and conditions
3850

Documented compatibility

From 485LM to 3850.

Conditional

Denco names 485LM in the stated application with 3850. Only 3850, 8360 and 8550 are named. Wiring, installed configuration and other model suffixes remain unverified.

Read the shared source conditions below
8360

Documented compatibility

From 485LM to 8360.

Conditional

Denco names 485LM in the stated application with 8360. Only 3850, 8360 and 8550 are named. Wiring, installed configuration and other model suffixes remain unverified.

Read the shared source conditions below
8550

Documented compatibility

From 485LM to 8550.

Conditional

Denco names 485LM in the stated application with 8550. Only 3850, 8360 and 8550 are named. Wiring, installed configuration and other model suffixes remain unverified.

Read the shared source conditions below

Conditions for the listed pairings

Additional source conditions or an adapter must be checked before confirming compatibility.

Details still needed
  • connection-purpose
  • source conditions

An unanswered condition keeps the result conditional or unverified.

Applies only within this source scope
  • Market: US
  • Model scope: 3850, 8360, 8550
  • connection-purpose: 485LM battery-backup use with the exact named opener.
  • Denco supplier statement for the US reference catalog; confirm the installed equipment and required functions. This is not a physical fitment test.
  • Only 3850, 8360 and 8550 are named. Wiring, installed configuration and other model suffixes remain unverified.

Direct replacement paths

No direct successor for 485LM is verified in this reference.

A direct replacement statement does not establish reverse interchangeability, a kit equivalent or a later replacement chain.

Compare exact equipment or a component.

Check a part or accessory pairing

Loading part or accessory choices…

Selected: 485LM · Read its reference. Selection identifies a record; it does not confirm fitment.

Choose the equipment or accessory brand separately from the component brand. A missing identifier is unverified. Use the model library to identify your equipment and its source documents.

An accessory pairing, including a receiver or wall console, applies only to the exact listed pair and source conditions. It does not establish suitability for your installed opener or compatibility through another device.

Choose the equipment or accessory brand to load its published identifiers.

Use the production date on the label or records, not the purchase date. Leave blank if unknown.

Use part and model numbers only. Never enter a serial number, PIN or access code. Your entry is used for this lookup and is not put in the page address, saved in browser storage or sent to analytics.

Choose a task and enter or select an exact identifier.

Recall references

No recall reference is included for this identifier in the published dataset. This is not a safety clearance or proof that no recall exists.

Sources & scope

  1. Denco supplier reference: LO 485LMDenco · US · checked 2026-09-12

Anderson prepared this reference from the listed evidence. Source statements are not an Anderson installation inspection or independent product test. Official documents stay on their publisher’s website.

Related equipment guides

Browse the model library →

Confirm a missing detail

Use LiftMaster official support and match the complete part number, equipment model and production details with the source scope.

Use safely accessible labels and existing paperwork. Do not remove powered covers or adjust springs or cables to identify a component.

Need help with an opener or control problem?

Garage Door Opener Repair: what an inspection or installation involves →

Share the equipment label and symptom. Availability is confirmed for the exact service address before scheduling. This reference does not establish a fault, part fitment, or repair availability for a particular model.

This is an independent Anderson reference. Manufacturer names identify the equipment and do not imply affiliation or authorized-dealer status.

A reference listing does not establish current stock, a price, eligibility for manufacturer support or that a component is faulty.

One Request. Three Simple Steps.

Let’s start with your door.

No need to leave this page. You can change your answers at any step.

  1. 1 The problem
  2. 2 Your location
  3. 3 Contact details

Your request is sent to Anderson. Appointment timing and any visit charge are confirmed with you.

What do you need help with?

Selected service: Opener repair. You can change this. Reason: Reference: LiftMaster 485LM.

If the door is crooked or partly open, keep clear. Do not adjust springs or cables yourself.

From our customers

What customers say on Google

G5.0★★★★★9 reviews
6 written Google reviews

Mama Bear

3 weeks ago

G
★★★★★
The service was fantastic- courteous, knowledgeable and honest.
Excerpt from Google review

Yehuda Robinov

a month ago

G
★★★★★
Very very professional guys good jobs good service

adam ricker

3 months ago

G
★★★★★
Great worker

David Avitan

3 months ago

G
★★★★★
They replaced three garage door motors for me, and the service was excellent from start to finish.
Excerpt from Google review

Mary larson

4 months ago

G
★★★★★
Very good service and very polite

Tippawan Markmaitree-Babin

4 months ago

G
★★★★★
Very good work, polite and flexible in scheduling appointments.

Reviews from Google. Rating and relative dates checked October 1, 2026. This is a dated snapshot, not a live feed.

Serving your home with pride

Check service availability in your area.

Call now to discuss the problem and check availability for your ZIP. The exact service address is confirmed before scheduling.

Call (203) 902-3902