Laptop Battery Compatible for Dell T54FJ E6430 E6420 8858X E6520 E5430 E6530 E5520 E5420 E6440 5520 T54F3 E5530 17R 5720 M5Y0X 7420 15R 5520 NHXVW 312-1324 3460 - High Performance [6 Cells/4400mAh]