Chamberlain LiftMaster 485LM Replacement Battery


  • Allows you to still come & go through your garage door when the power goes out
  • Lift master 485lm battery backup system – chamberlain part number 4228- 100% OEM
  • New production dates- Lift Master factory supplied
  • Also works with Sears and Home Depot garage door battery backups- replacement part
  • Compatibility for all battery backup units with slide-in battery – 385/855 and new models