Specifications:Model Name: CS03XL; Voltage: 11.4V; Capacity: 48Wh ; Cells: 3-cell; Color: Black; Battery life: More than 1000 cycles, 100% from Manufacturer Compatible ModelReplacement for HP Elitebook 745 G4 G3, EliteBook 755 G4 G3EliteBook 840 G3EliteBook 840 G4 EliteBook 850 G3ZBook 15u G3 ZBook 15u G4 Mobile Workstation Notebook Compatible P/N: CS03XL CS03 800231-141 800513-001 HSTNN-I33C-4 HSTNN-I33C-5 HSTNN-I41C-4 HSTNN-I41C-5 HSTNN-IB6Y HSTNN-UB6S Security & Reliability:The CS03XL battery is engineered with built-in Overcharge, Overdischarge, Over-temperature, and Short-circuit Protection, guaranteeing security and reliability, and ensuring your laptop operates safely Excellent After-Sales Service: 24 hours Online Service. If you have any questions or need assistance with your CS03XL 48Wh Battery, we are here to help