Neptune Brand NT485LM Replacement Battery for Chamberlain LiftMaster Garage Door Openers

The Neptune NT 485LM serves as a direct replacement for the Liftmaster 485LM battery. This product is designed to work seamlessly with both Liftmaster and Chamberlain garage door openers, providing a battery backup solution to ensure functionality during power outages and to prevent lock-outs. Utilizing advanced Absorbent Glass Mat (AGM) technology, this battery delivers superior performance.

Featuring a valve-regulated, spill-proof design, the Neptune NT 485LM guarantees safe operation regardless of its position. Replacing the battery is straightforward, following a few simple steps:

1. Start by disconnecting the power to the opener.
2. Using a Philips head screwdriver, remove the battery cover from the motor unit.
3. Carefully take out the old battery and dispose of it properly.
4. Insert the new battery partially into the motor unit with the terminals facing outward.
5. Attach the red (+) and black (-) wires from the motor unit to the corresponding terminals on the new battery.
6. Replace the battery cover securely.
7. Finally, reconnect the power supply.

This battery comes with a 2-year manufacturer's warranty that covers quality-related issues; however, customers are responsible for shipping costs to and from the warranty facility. It’s important to note that after 30 days from the date of purchase, only a replacement will be issued.

The Neptune NT 485LM battery is compatible with a range of models, including but not limited to: 804302, 23-289, 23-289B, 23-289A, 23289, BP4-12, BP4.5-12, BP5-12, CA1240, CFM12V4.6M, DG12-5, ES4-12, GP1245, GP1250, HR5.5-12, HR1221WF2, JC1240, LC-R125P, LC-RB124P, LC-R125P, LCR-12V4BP, LCR-12V5P, NP4-12, NP4-12P, NPH5-12, NPX-25, PC1250, PE4-12R, PE4.5-12R, PE12V4.5F1, PE12V4.0, PS-1242, PS-1250, PS1250, PS-1252, PXL12050, RBC45, SLA-12V4-5, UB1245, UB1250, UB1250A, WP4-12, and WP4.5-12.

This battery operates at 12 volts with a capacity of 5AH, featuring a sealed lead acid (SLA) construction that is maintenance-free. Its compact dimensions are 3.54” x 2.76” x 3.94”, with F1 terminals. Please note that this listing includes the battery only and does not come with a wire harness or mounting accessories.

The SLA / AGM spill-proof battery boasts characteristics such as a high discharge rate, broad operating temperature range, extended service life, and effective deep discharge recovery. It is a rechargeable battery suitable for mounting in any orientation, built to withstand shocks and vibrations, and it maintains high performance in both high and low temperatures.

The Neptune NT 485LM is also a perfect alternative to various models including EXP1240, UPG UB1240, MightyMax ML4-12, Power-Sonic PS-1240, and Power King PK1240, among others. A 30-day refund policy is in place, along with a full one-year warranty. Since Amazon does not handle returns for battery-related products, customers should reach out directly to the seller for assistance. Rest assured, our Neptune support team is always ready to assist you.

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