High-Capacity Workstation Battery for HP ZBook Studio G3 and G4 Series Power your HP ZBook Studio G3 or G4 mobile workstation with this premium 92Wh Li-ion replacement battery. Specifically engineered for professional mobile workstations, this ZN08XL compatible battery delivers reliable power for demanding CAD, engineering, and creative applications. Features robust 15.4V output and high-capacity 5975mAh in an efficient 4-cell design.