Dell Inspiron 630M 640M E1405 C9551 TC023 Y4493 Y9943 XPS M140 6 Cell Laptop Battery (Vendor Warranty)
The extra run time is achieved with an additional 3 cells inside the cartridge. Users of this Dell Inspiron 630m 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 Dell Inspiron 630m laptop battery power use, especially the screen brightness.
Dell Inspiron 630m 6 Cell Laptop Battery