Battery, 51WHR, 4 Cell,

The Dell R9XM9 is a replacement battery for compatible Dell laptops, supplying power when you use a laptop away from a mains outlet. This variant has four cells, 51Wh energy capacity and a rated voltage of 7.4V. It is lithium-polymer and black.

The retailer lists Latitude E5250, E5270, E5450, E5550 and E5470 as compatible models. Check that your laptop matches this compatibility list, since other R9XM9 versions have different cell counts, energy capacities and voltages.

It can replace a worn or unusable battery in the listed systems. R9XM9 identifies the replacement part; the description does not claim that Dell manufactured it.