The Dell 0W62W6 is an internal replacement battery for a notebook, intended to power it when you are away from a mains connection. Its corresponding Dell manufacturer part number is W62W6.
With six lithium-ion cells and a capacity of 97 Wh, this battery is one specific variant. A distributor lists its electrical ratings as 11.4 V and 8500 mAh.
Dell lists the XPS 15 (9570) as compatible, so this battery can serve as a replacement for that model when the W62W6 variant is required.