Battery, 42WHR, 3 Cell,

Dell 2R9W6 is an alternative part number for the WDX0R laptop battery, a lithium-ion unit intended for use in a laptop.

Its three-cell design and 42Wh stated capacity identify this battery variant. The listing also gives 03CRH3 as a Dell part reference for this battery type.

These details can help compare the battery with the one you need. The listing does not specify compatible laptop models.