TWB Premium Grade Generic Laptop Battery For Dell studio xps 1640 TWB Batteries are the perfect choice that you can make for your computer. Very affordable, The best quality batteries on the market. Long Life durable Battery for your Laptop Cell Type: Li-ion Voltage: 11.1V Capacity: 4400mAh Color: Black Product Type: battery( New) Replace Part Numbers: DELL 0R720C 0U011C 0W267C 0W298C 0X413C 312-0814 Platrow PP35L R720C U011C W267C W298C X413C ? Fit Laptop Models: DELL Studio 16 Laptop Studio 1640n Studio 1647n Studio XPS 16 Studio XPS 16 (1640n) tudio XPS 16 (1645) Studio XPS 16 (1647) Studio XPS 16 (1647n) Studio XPS 1645 Studio XPS 1647 Studio 1645n Studio XPS 16 (1645n) Studio XPS 16 (1640) Studio XPS 1640 What's in the box 1 X Laptop Battery