Bay Valley Parts New 58Wh Notebook Battery for Dell Latitude E5420 E6420 E5520 E5530 E6520 Compatible P/N: M5Y0X T54FJ 2P2MJ 312-1325 312-1165 PRV1Y-12 Laptop Battery Months Warranty Battery type: Li-ion; Capacity: 58Wh; Cells:6-cell; Voltage: 11.1V;Capacity:5200mah. Compatible Models: For Dell Latitude E6530 E6520 E6520 N E6430 E6430 ATG E6420 E6420 XFR E5530 E5520 E5520 BRC 6 E5520 N E5520M E5430 E5420 Dell Inspiron 14R Series 4420 5420 5425 7420; Dell Inspiron 15R Series 4520 5520 5525 7520 15R-SE-4520 15R-SE-5520 15R-SE-7520; Dell Inspiron 17R Series 4720 5720 7720 17R-SE-4720 17R-SE-5720 17R-SE-7720; Dell Inspiron M421R M521R N4420 N4520 N4720 N5420 N5520 N5720 N7420 N7520 N7720; Dell Vostro 3460 3560 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. 12-months hassle-free warranty service. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.