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475LM Battery Back up System For LiftMaster 8500, 3900, 3800 garage door opener

$99.95
SKU:
475LM
Condition:
New
Availability:
Usually ships within 24hrs
Qty.

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The 475LM EverCharge Battery Backup System for your Liftmaster Garage door opener (see models below)

This easy to install battery connects easily and will provide comfort and convenience in the event of a power outage.

  • Works with LiftMaster 8500 models 2500 3500, 3900, 3950 and 3800 garage door openers
  • Operates the garage door opener as if the power was still on (all safety and security features still operate)
  • Audible signal sounds when door is moving under battery power
  • Bright LED lights let you know when the EverCharge is charging in use or when the batteries need to be replaced

475LM Liftmaster battery installation guide (click)

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