# Liftmaster 485LM Replacement Battery

Liftmaster 485LM is the replacement battery for the EverCharge standby power system for Liftmaster 3850, 8360, and 8550 garage door openers. 12 volt 5ah.Manufacturer original equipment replacement part.

Includes:

-   485LM Battery

##### Compatibility

Compatible with: Liftmaster 3850, 8360, 8550 garage door opener.

##### Instructions

**Replacing the Battery:**  

1.  Disconnect power to opener.
2.  Using a Phillips head screwdriver, remove the battery cover on the motor unit.
3.  Remove the old battery and discard.
4.  Partially insert new battery into motor unit with terminals facing out.
5.  Connect red (+) and black (-) wires from motor unit to corresponding terminals on battery.
6.  Replace battery cover.
7.  Reconnect power.

## Details

- **Price:** 68.99 USD
- **Vendor:** Liftmaster

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 68.99 USD | In stock |

## Images

- Liftmaster Replacement Battery 485LM
- LiftMaster 485LM garage door opener backup battery 12V 5Ah replacement
- LiftMaster 485LM replacement backup battery for garage door opener EverCharge system
- LiftMaster 485LM EverCharge standby battery for 3850 8360 8550 openers
- 485LM Liftmaster Part
- Garage door opener battery replacement 485LM 12 volt 5Ah LiftMaster OEM

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> Source: [Express Garage Doors](https://www.expressgaragedoors.com/products/liftmaster-485lm-battery)
> Updated: 2026-07-14