The Drypower 12SB7.2P-F2 battery is the perfect product for anyone wanting to replace the battery in the NBN Battery Backup service system. Meeting all of the specifications outlined on the National Broadband Network website, this Drypower battery can be fitted with minimal fuss. http://www.nbnco.com.au/content/dam/nbnco/documents/NBN-power-supply-battery-backup-battery-specification.pdf Width 65mm Height 94mm Length/Breadth/Depth 151mm Weight 2450g