Battery, 39WHR, 3 Cell,

The Dell 09YYF is an internal laptop battery for powering selected Dell Latitude models. Its three-cell lithium-polymer design and identifying part number help distinguish it from other battery variants.

It has a stated capacity of 39 Wh (3255 mAh) and a rated voltage of 11.4 V. These ratings describe the battery’s power capacity and electrical output for a matching laptop.

The listed compatible models are Dell Latitude 13 (7310), Latitude 13 2-in-1 (7310), Latitude 14 (7410) and Latitude 14 2-in-1 (7410). Dell’s battery data table also associates part 09YYF with reference 35J09 and confirms the 39 Wh capacity and 11.4 V rating. Match the part to the system before choosing it as a replacement.