Replacement Battery for Chamberlain LiftMaster Garage Door Openers

Neptune NT 485LM is a direct replacement for the Liftmaster 485LM battery, designed as a Liftmaster and Chamberlain garage door opener battery backup. Featuring Absorbent Glass Mat (AGM) technology, this battery offers superior performance and the ability to operate safely in any position, thanks to its valve-regulated, spill-proof construction.

The easy, step-by-step battery replacement instructions are as follows: 1. Disconnect power to the opener. 2. Remove the battery cover on the motor unit using a Phillips head screwdriver. 3. Discard the old battery. 4. Partially insert the new battery into the motor unit, with the terminals facing outwards. 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 power.

This battery comes with a 2-year manufacturer warranty, covering any quality-related issues. The customer is responsible for shipping the battery to and from the warranty facility, and after 30 days, only a replacement will be provided.

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", with an F1 terminal. This listing is for the battery only, without any wire harness or mounting accessories.

The SLA/AGM spill-proof battery is known for its high discharge rate, wide operating temperatures, long service life, and deep discharge recovery. It can be mounted in any position and is resistant to shocks and vibration, delivering long-lasting high performance 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, and Power King PK1240, among others. The product comes with a 30-day refund policy and a full 1-year warranty.

Please note that Amazon does not handle the return of battery-related products, so customers should contact the seller directly. The Neptune support team is available to assist you with any questions or concerns.

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