PRODUCT DESCRIPTION IBM 42R8305 Battery for System iPower6 PCI-X Raid Disk Controllers Replacement For: 39J0686, 39J5554, 42R5130, 42R5133, 42R8305, 97P4846, CGA-E/212AAT IBM 571F And 574F Auxiliary-Write Cache IOA Adapters May Be Used With IBM 0641, 0649, 5580, 5581, 5582, 5583, 5590, 5738, 5777, 2757, 2780 Disk Controllers. For IBM 39J0686, 42R5130, 42R5133 Cache Adapters. IBM Cache Battery For System I Series POWER6 571E, 574F, 2780, 5708 PCI-X Raid Ultra4 Disk-Controllers And PCI-X DDR Quad Channel Ultra 320 SCSI RAID Adapters. The IBM 571F And 574F Auxiliary-Write Cache IOA Adapters May Be Used With IBM 0641, 0649, 5580, 5581, 5582, 5583, 5590, 5738, 5777, 2757, 2780 Disk Controllers. This Battery Attaches To IBM FRU Numbers 39J0686, 42R5130 And 42R5133 Adapters. Voltage: 3.7 Volts Capacity: 3900mAh Chemistry: Li-Ion - Lithium Ion Dimensions: L 2.68" x W 2.11" x H 0.41" Terminals: 6 Pin Connector