SKYVAST 6-Cell 11.1V 65Wh High Performance Laptop Battery MR90Y for Dell Inspiron 14 15 17 14R 15R 17R, Latitude 3440 3540, Vostro 2421 2521 Type: Li-ion; Rating: 11.1V / 65Wh; Cell: 6; Color: Black Fit with Dell Inspiron 14(3421) / Inspiron 14R(5421) / Inspiron 14R(5437) Dell Inspiron 15(3521) / Inspiron 15R(5521) / Inspiron 15R(5537) Dell Inspiron 17(3721) / Inspiron 17(3737) / Inspiron 17R(5721) / Inspiron 17R(5737) ABS+PC materials: good gloss, smooth feel, anti-flammability, wear-resisting Warranty: 90 days money back, free exchange within 12 months. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.