485LM is a 12V Replacement Battery. For use with various LiftMaster DC Motor Garage Door Openers featuring Backup Battery Systems. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility. Operates the Garage Door Opener as if the power was still on, plus all safety and security features will be operational 12V replacement battery is used in the following models: 8500, 8500W, 8550W, WLED, 8360, & 8360W IMPORTANT NOTE: Max door weight with battery increases from 650 lbs. to 850 lbs. with the addition of the 485LM Battery on LiftMaster Models LJ8900W and LJ8950W. Genuine LiftMaster replacement part.

• 485LM is a 12V Replacement Battery. For use with various LiftMaster DC Motor Garage Door Openers featuring Backup Battery Systems. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.
• Operates the Garage Door Opener as if the power was still on, plus all safety and security features will be operational
• 12V replacement battery is used in the following models: 8500, 8500W, 8550W, WLED, 8360, & 8360W
• IMPORTANT NOTE: Max door weight with battery increases from 650 lbs. to 850 lbs. with the addition of the 485LM Battery on LiftMaster Models LJ8900W and LJ8950W. Genuine LiftMaster replacement part.