Replacement Battery for Chamberlain LiftMaster Garage Door Openers

The Neptune NT 485LM is a direct replacement for the Liftmaster 485LM battery. It is designed to serve as a battery backup for Liftmaster and Chamberlain garage door openers, ensuring continued operation during power outages and preventing lockouts. The battery utilizes Absorbent Glass Mat (AGM) technology, providing superior performance. Its valve-regulated, spill-proof construction allows safe operation in any position.

Replacing the battery is a straightforward process:

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

The Neptune NT 485LM is a 12V, 5AH Sealed Lead Acid (SLA) rechargeable, maintenance-free battery. Its dimensions are 3.54" x 2.76" x 3.94", and it has an F1 terminal. This listing is for the battery only, without any additional wire harness or mounting accessories.

The SLA/AGM spill-proof battery offers several desirable characteristics, including a high discharge rate, wide operating temperature range, long service life, and the ability to recover from deep discharge. It is a rechargeable battery that can be mounted in any position, resisting shocks and vibrations. This battery delivers long-lasting, high-performance operation in both high and low temperatures.

The Neptune NT 485LM is a perfect replacement for a wide range of batteries, including EXP1240, UPG UB1240, MightyMax ML4-12, Power-Sonic PS-1240, Power King PK1240, and many more. The product comes with a 30-day refund policy and a full 1-year warranty.

It's important to note that Amazon does not handle the return of battery-related products, so customers are advised to contact the seller directly for any warranty-related inquiries. The Neptune support team is available to assist customers with any questions or concerns they may have.

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