LiftMaster 485LM 12V Backup Battery

Genuine LiftMaster 485LM 12V replacement battery for DC-motor garage door openers equipped with Backup Battery Systems. When installed, the 485LM allows the opener to run as if household power is present and keeps all safety and security functions active. Compatibility: Designed for use with LiftMaster models 8500, 8500W, 8550W, WLED, 8360, and 8360W. Verify compatibility for your unit by consulting the owner's manual or the replacement parts diagram before ordering. Important note: On LiftMaster LJ8900W and LJ8950W models, adding the 485LM increases the maximum supported door weight from 650 lbs. to 850 lbs. This is an authentic LiftMaster replacement part intended for systems that require the 485LM 12V backup battery.