Liftmaster 8550 Battery Replacement
Liftmaster 8550 Battery Replacement . The battery is not needed to open or close the door when the unit is plugged into electrical outlet. Please check your battery for dimensions prior to ordering as manufacturers may change requirements without notice. LiftMaster 8550 Replacement Parts LiftMaster from www.liftmaster.com Quick view add to cart. Usually ships in 1 business day. Energizer 123 lithium batteries (2 pack), 3v photo batteries.