HP Pavilion DM3-1040US thats affordable and durable - Work and play longer without plugging in using a battery

Specifications :
* 1.3GHz Intel Pentium SU4100 Processor (2 MB L2 Cache, 800 MHz FSB)
* 4 GB DDR3 RAM (2 Dimm), Max supported 8 GB
* 320GB (7200RPM) SATA Hard Drive
* 13.3-Inch Diagonal High-Definition HP LED BrightView Widescreen Display (1366 x 768)
* Intel Graphics Media Accelerator 4500MHD (shared) with up to 1.6 GB total available graphics memory
* Genuine Windows 7 Home Premium 64-bit, *Up to 10 Hours of Battery Life
* 6-cell Lithium-Ion Battery; Up to 8 hours battery life
* 4.21lbs; 12.83" x 9.06" x 0.96"/1.23"