Magazine : 
6 Ultrabooks with Best Battery Life
Acer Aspire S3:
Acer Aspire S3 promises to give 7 hours of battery life, but it keeps its promise for about four and a half hours. The evolved form of laptop is very much portable, fast and also comes with an affordable price tag.
The specifications include Intel Core i3/i5/i7 processor, 4 GB of RAM, choice of SSD and HDD internal storage devices, 13.3-inch LED display features a 1366×768 pixels resolution and a full-size chiclet keyboard.
Price: 
50,000 onwards.
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