The HP SS03050XL-PL is a replacement battery for compatible HP laptops and mobile thin clients. The product sheet also identifies it as part 933321-855.
Its black, three-cell lithium-ion design has a rated capacity of 4330 mAh and 50 Wh, for replacing a compatible battery in the listed devices.
Compatibility includes the HP EliteBook 830 G5, 735 G5, 735 G6, 745 G5 and 840 G5, HP ZBook 14u G5, and HP mt44 and mt45 Mobile Thin Clients.
Package contents: one battery.