The HP VX04XL 15.4V 90Wh Battery is a high-quality replacement battery designed specifically for HP Zbook 15 G5 and G6 laptops. It is a Li-Ion battery with a capacity of 90Wh and 4 battery cells, providing reliable power for your laptop while on the go. The black battery comes with a manufacturer warranty of 1 year and is compatible with various HP models such as VX04XL, HSTNN-IB8F, LO5766-855, and HSN-Q13C. Made by HP, this laptop battery is a dependable and durable accessory for your computing needs.