The Liebert GXT4 is designed to allow the user to replace the internal battery pack safely.BatteryCapacity:9 AhEnclosure Type:InternalInstalled Qty:12Lead Acid Battery Features:Spill proofRecharge Time:3 hour(s)Technology:Lead acidVoltage Provided:12 VEnvironmental ParametersHumidity Range Operating:0 - 95% (non-condensing)Max Operating Temperature:104 °FMin Operating Temperature:32 °FHeaderBrand:LiebertCompatibility:PCManufacturer:LiebertModel:GXT4-144VBATKITPackaged Quantity:1Product Line:LiebertMiscellaneousCompliant Standards:cUL , FCC Class A certified , UL 1778Features:Flame retardantDimensions & WeightDepth:19.3 inHeight:2.8 inWeight:75.84 lbsWidth:8.1 inGeneralProduct Type:UPS batterySubcategory:Batteries (UPS battery replacements)TitleEmerson / GXT4-144VBATKIT 9Ah UPS Battery Lead Acid Kit ConditionNew, open box ContentEmerson UPS battery lead acid ManufacturerEmerson ModelGXT4-144VBATKITSKUBAE1001http://www.compeve.com/Products/UPS/eReplacement/GXT4-144VBATKIT/GXT4-144VBATKIT_compeve__1.jpghttp://www.compeve.com/Products/UPS/eReplacement/GXT4-144VBATKIT/GXT4-144VBATKIT_compeve__2.jpg