The Dell PERC (PowerEdge RAID Controller) family of enterprise-class controllers is designed for enhanced performance, increased reliability and fault tolerance, and simplified management-providing a powerful, easy-to-manage way to create a robust infrastructure and help maximize server uptime. The PERC battery maintains your PERC running smoothly and helps with your data saving and reading speed. Device Type: RAID controller battery backup unit Battery: Lithium ion 1-cell - 7 Wh Batteries Qty: 1 Pricing Type: Refurbished Manufacturer Warranty: 90 days warranty Designed For: PowerEdge 1900, 1950, 2950 Device Type: RAID controller battery backup unit Quantity: 1 Technology: 1-cell lithium ion Capacity: 7 Wh Pricing Type: Refurbished Service & Support: Limited warranty - 90 days Designed For: Dell PowerEdge 1900, 1950, 2950