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Battery Type: Li-polymerVoltage: 11.4V Capacity: 48WH ; Cells: 3-cell; Color: Black with Two Free Screwdrivers Compatible for HP Elitebook 745 G3; HP EliteBook 745 G4 EliteBook 755 G3 EliteBook 755 G4 EliteBook 840 G3 EliteBook 840 G4 EliteBook 850 G3 ZBook 15u G3 ZBook 15u G4 Compatible P/N: CS03 CSO3 CS03XL CSO3XL HSTNN-I33C-4 HSTNN-I33C-5 HSTNN-I41C-4 HSTNN-I41C-5 HSTNN-IB6Y HSTNN-UB6S 3ICP6/65/79 800231-141 800513-0