42Wh Lithium-Ion battery for

The Dell 021X15 is an internal replacement battery for compatible Dell laptops, providing power when a computer is away from an AC supply. It is also catalogued as part number 21X15.

Its Li-Polymer design has 3 cells, a stated capacity of 42 Wh and an output voltage of 11.4 V. These details help identify the correct battery variant when comparing replacement parts.

The listed suitable models include Dell Latitude 14 (E7470) and Dell Latitude 12 (E7270). Use the part number to check that the battery matches the laptop before choosing it for maintenance or replacement.