The Genie battery backup unit offers peace-of-mind to homeowners who need to be able to operate their garage door opener during a power outage. Never be locked out of your garage again due to bad weather or electric company equipment failure. Genie and Interstate Batteries have come together to ensure the safety and security of your home at all times. When the power goes out, Genie battery power kicks into gear automatically. This unit is designed as a replacement battery backup unit or an upgrade for all Genie 140-Volt garage door openers. This works with belt, chain, and screw drive garage door openers. See the images for a compatibility guide. This garage door opener battery backup add on allows for up to 50 full operations of your garage door when the primary power is out.