https://www.batteryone.co/detail/1735833/3K7J7
65WH 3K7J7 Battery for Dell Latitude E5440 E5540 (Model 3K7J7) by Batteryone.co
The Dell 3K7J7 battery for Dell Latitude E5440 E5540 , capacity of 65WH. 12 Months Warranty. 100% compatible. Long running time.
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