Specifications: Capacity: 4400mAh/49Wh Chemistry: Li-ion Voltage: 11.1V Cell: 6 cells Compatible Models: Dell Vostro 1310, Dell Vostro 1320, Dell Vostro 1510, Dell Vostro 1520, Dell Vostro 2510, Dell Vostro PP36L, Dell Vostro PP36S Please carefully check your battery's Compatible Model & battery picture to ensure compatibility with your Laptop. What's in the box 1 X Astrum Replacement Laptop Battery for Dell Vostro 1320 Series