Dell 401D9 is a laptop battery intended to power compatible Dell notebooks. It is listed as a Dell product and serves as a replacement battery for supported systems.
Its four-cell lithium-polymer design is rated at 68 Wh and 4250 mAh, providing stored energy for the notebook during use away from a power outlet. The specified output voltage is 15.2 V.
Listed compatible models include Dell Latitude 5401 and 5501, and Dell Precision 3541.