This is a brand new Dell Studio XPS 1640 battery. The superior South Korean cells inside the 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 Studio XPS notebook computer. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.
You can expect about 2 - 3 hours of run time with this computer battery when new, depending on your energy use.
This battery replaces the Dell Studio XPS 16, 1640, 1640n, 1645, 1645n, 1647, 1647n series laptops.