Type: RAID Battery Specifications: General Device Type: Memory backup battery Battery Enclosure Type: Internal Width: 2.6 in Depth: 2.1 in Weight: 1.4 oz Battery Quantity: 1 Technology: Lithium ion Voltage Provided: 3.7 V Capacity: 700 mAh Run Time (Up To): 72 hrs Recharge Time: 8 hour(s) Max Recharge Cycles: 500 Miscellaneous MTBF: 2,490,772 hour(s)