BND 7800mAh Laptop Battery [with Samsung Cells] for Dell Studio 17 1737 1735 1736 PP31L, fits P/N KM973 RM791 PW823-24 Months Warranty [9-Cell Li-ion] Battery type: Li-ion; Cells: 9-cell; Capacity:7800mAh / 87Wh; Voltage: 11.1V. Equipped with Samsung grade A cells. Charges quickly. Longer discharge time. Steady output and low power consumption. More than 500 times charge-discharge cycles. Compatible part number: 312-0711 / 312-0712 / 312-0708 / PW823 / PW824 / PW835 / KM973 / KM974 / KM978 / RM791 / RM868 / RM870 / MT335 / MT342 Compatible Models: Dell Studio 17 1735 1736 1737 PP31L 24 months hassle-free warranty service.We provide best prices possible on the highest quality products and the most popular brands. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.