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Battery type: Li-ion; Capacity: 58Wh; Cells:6-cell; Voltage: 11.1V;Capacity:5200mah.

Compatible Models: For Dell 14 3421 / 14r 5421 3437 N3421 N5421 / 15 3521 / 15r 3537 5521 5537 N3521 N5521 N5537 / 17 3721 / 17r 5737 N3721 N3737 N5721 N5737 5721 MR90Y replacement notebook laptop battery batteries

High quality grade "A" cells. Charges quickly. Longer discharge time. Steady output and low power consumption. More than 500 times charge-discharge cycles.All products are Certified by CE ROHS UL1642 FCC for safety.

Operation time for standard batteries(6-cell 5200mah): Around 2 hours the actual operation time will depend on how much electricity is required by the device and how you use it. 24 x 7 email support 12-month service.

Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.