Battery, 45WHR, 4 Cell,

The Dell 451-BBCG is a lithium-ion replacement battery for compatible Dell laptops. Its 45 Wh capacity and 4-cell configuration identify the variant and help check whether it matches the battery needed.

The part is listed for Dell Latitude E7240 and Latitude E7250 laptops. In a compatible system, it lets you use the laptop on battery power when away from an outlet.