Replacement Battery for Chamberlain LiftMaster Garage Door Openers

Neptune NT 485LM is a direct replacement for the Liftmaster 485LM battery. Used as a Liftmaster and Chamberlain garage door opener battery backup, it allows for use when power is out, helping prevent lock-outs. Featuring Absorbant Glass Mat (AGM) technology for superior performance, the valve regulated, spill proof construction allows safe operation in any position.

The easy day-to-day battery replacement instructions are as follows: 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 manufacturer provides a 2-year warranty that covers any quality-related issues. The customer is responsible for shipping the battery to and from the warranty facility. After 30 days, only a replacement will be provided.

The Neptune NT 485LM is a direct replacement for a variety of batteries, including 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, WP4.5-12, and WP5-14.

This 12V 5AH Sealed Lead Acid (SLA) rechargeable maintenance-free battery has dimensions of 3.54"x 2.76"x 3.94" and a terminal type of F1. The listing is for the battery only, and no wire harness or mounting accessories are included.

The SLA/AGM spill-proof battery has characteristics of high discharge rate, wide operating temperatures, long service life, and deep discharge recovery. It is rechargeable and can be mounted in any position, resisting shocks and vibration. The battery delivers long-lasting high performance in both high and low temperatures.

The Neptune NT 485LM is a perfect replacement for a variety 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. As Amazon does not deal with the return of battery-related products, customers should contact the seller directly. The Neptune support team is available to assist customers with any inquiries or concerns.

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