Egoway 5200mAh/58Wh Laptop Battery for Dell Inspiron N3010 N4010 N4110 N5010 N5110 N7010 M4110 M5110 M501 M5030 Series, Vostro 3450 3550 3550n 3750-18 Months Warranty Equipped With Higher Quality Cells yet has Same Size & Shape as an OEM Battery ; Battery Type: Li-ion; Voltage: 11.1V; Capacity: 5200mAh; 6 Cell. Overcharger and Discharger Circuit Protection, CE-/FCC-/RoHS-Certified for safety Contain with Durable cells; Low power consumption IC design; Tested with strict quality control standards; Direct warranty from Manufacturer. Operation time:Same Battery life with Brand new original Dell battery.In reality, this will depend on the amount of electricity required by the device and how you use it Warranty: 18 Months, 30 days money return guarantee, 24 x 7 email support.