This is a brand new PW823 battery for Dell Studio 17 1735 models.
NOTE: This battery is going to be physically larger than the original. This long run PW823 battery will run at least 50% longer than the 6 cell battery that ships standard with your laptop. The added run time is achieved with an additional 3 cells inside the cartridge. This longer running battery will extend to the bottom of your laptop about 1 inch. Users of this battery pack experience an additional 1-2 hours of run time over the standard battery.
Estimated run time with this battery is 3-5 hours. Longer run times can be achieved by minimizing the power use, especially the screen brightness.
This PW823 battery is typically superior to the original battery and is 100% compatible with your Dell Studio laptop computer. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.