Townpeak High Performance 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 383CW YXVK2 W7H3N J4XDH 9TCXN 11.1V 5200mAh/58Wh --12 Months warranty