The LiftMaster 475LM EverCharge Battery Back Up System is a standby power accessory designed to keep compatible LiftMaster residential garage door openers running during a power outage. When utility power fails, the 475LM automatically supplies DC power so you can open and close the door and keep safety reversing sensors and lighting operational. It recharges itself when power is restored and includes status indicators and a test function, making it a practical upgrade or replacement part for homeowners who need reliable access to the garage in emergencies.
This EverCharge system is engineered for select LiftMaster operators that are specifically designed to accept the 475LM interface; it is not a universal add-on, so confirm compatibility in your opener’s manual or model-specific documentation before ordering. Typical performance supports multiple door cycles during the first 24 hours of an outage (actual number varies based on door weight/balance, temperature, and usage). The unit connects to a standard North American 120V AC outlet to maintain charge and provides DC power to the operator during outages. Installation generally involves mounting the module near the opener and plugging it into the designated connector—no radio frequency programming is required. For best results and safety, ensure the door is properly balanced, test the system periodically, and replace the rechargeable battery as needed per manufacturer guidance. This LiftMaster EverCharge battery backup solution is ideal for residential applications where dependable garage access is essential.
