Basementsaver Sump Pumps & Backup Sump Pumps Outlet offers a range of high quality battery backup sump pumps at http://www.basementsaver.com

Choose from 3 models:
Basementsaver BP1 battery backup pump - pumps 1,800 gph at 12VDC
Basementsaver BP2 battery backup pump - pumps 1,400 gph at 12VDC - for sump pits with restricted space!
Basementsaver BP3 battery backup pump - pumps 3,000 gph at 110-120VAC via an inverter