Chamberlain 0.75-HP MyQ Battery Backup Belt Garage Door Opener in the Garage Door Openers department at Lowes.com
Chamberlain 0.5-HP myQ Smart Belt Drive Garage Door Opener Works with Myq Wi-fi Compatibility Battery Back-up in the Garage Door Openers department at Lowes.com
Battery for Chamberlain 950D 950CD Remote Garage Door Opener | eBay