Fully compatible with specified laptop. Genuine OEM replacement. Genuine OEM Parts. Origin Storage is a global supplier of IT storage solutions and components. The company's product portfolio includes matched hard drive & SSD solutions, matched memory, hardware encryption solutions and a wide range of accessories. Origin Storage prides itself on superior customer service, competitive pricing and knowledgeable sales staff. The company is unique, not only in its product range but also in its philosophy, which adds up to a professional purchasing experience. Origin Storage, the ideal partner for all your current or legacy aftermarket system upgrade needs.. Features. Compatible products. Latitude E5440/E5540. Brand compatibility. DELL. Product colour. Black. Battery voltage. 11.1 V. Number of battery cells. 6. Battery technology. Lithium-Ion (Li-Ion). Certificates. Certification. UL, CE. Packaging data. Package type. Box. Quantity. 1. Quantity per pack. 1 pc(s). Technical details. OEM code. CXF66. Shape. Rectangle. leaflet. Origin Eco. Origin Promo