Battery, 51WHR, 4 Cell,

The Dell 1KY05 is a laptop battery for powering a compatible notebook away from a mains outlet. Its four-cell lithium-ion design has a rated energy capacity of 51 Wh and an output voltage of 7.4 V.

Part number 1KY05 is listed for Dell Latitude E5250, E5450 and E5550 models, making it a replacement option for those notebooks. The listed model names define the compatibility covered by this description.

Use the battery for portable power when working at a desk without a nearby outlet or carrying a notebook between locations. Its chemistry, cell count, capacity and voltage identify its electrical characteristics.