LiftMaster 41B591 replacement battery from Garage Door Supply Company is for use only with LiftMaster 475LM battery backup units on LiftMaster 2500, 3500 and 3800 model garage door openers. The LiftMaster 475LM battery backup system will operate your LiftMaster garage door opener when there's a power outage. The LED light will indicate when it's time to change the batteries.
- 1 Battery
- Only for use with LiftMaster 475LM battery backup units
- Use only with LiftMaster model 2500, 3500 and 3800 garage door openers
If Your Model Number is not listed above, DO NOT ORDER THIS KIT!