Key Power Laptop Battery for Dell Inspiron 13R (N3010) 14R (N4010) 14R (N4110) 15R (N5010) 17R (N7010) M5110 M4110 M501 M503 Series, Vostro 3450 3550 3550n 3750, Fits P/N J1KND 312-0234 [5200mAh/58WH] Battery type: Li-ion; Capacity: 5200mAh/58WH; Cells: 6-cell; Voltage: 11.1V. Battery life: 100% New from Manufacturer. Up to 600 recharge cycles over the life of the battery. Compatibility: EXACT 1:1 Ratio capacity same as Dell OEM batteries. Safety: CE-/FCC-/RoHS-Certified for safety. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Warranty: 18 month hassle-free warranty.