This is a brand new 9 Cell Extended Run premium Dell Latitude high capacity replacement battery. The additional capacity in this battery will cause the battery pack to protrude to the bottom of the laptop about 1 inch. This battery wont fit in the Dell docking station. The superior South Korean cells inside this battery cartridge will provide longer run times between charges as well as a longer service life than cheaper batteries. In addition, Li-ion batteries are not subject to the memory effect common with older battery technology. This means you can recharge your laptop any time without diminishing your battery capacity. This laptop battery replacement is typically superior to the original battery and is 100% compatible with your Dell Latitude laptop computer. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.