Xtend Battery for 9 Cell Battery for Dell Inspiron 1464 1564 1764 Laptop Battery type: Li-ion; Capacity: 87Wh; Cells:9-cell; Voltage: 11.1V;Capacity:7800mah. High quality grade "A" cells. Charges quickly. Longer discharge time. Steady output and low power consumption. More than 500 times charge-discharge cycles.All products are Certified by CE ROHS UL1642 FCC for safety. Operation time for standard batteries(9-cell 7800mah): Around 2-3 hours the actual operation time will depend on how much electricity is required by the device and how you use it. 24 x 7 email support 12-month service. Compatible Models: For Dell 1464 1464D 1564 1564R 1764 Series P/N:312-1021 312-1022 451-11467 0FH4HR 05Y4YV 5YRYV 9JJGJ replacement notebook laptop battery batteries 12-months hassle-free warranty service. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.