Laptop Batteries Running Life

The machines with the shortest battery life tend to be those with desktop processors in them. Going back three or four years, the most you could expect from a single Dell Inspiron 510m Battery, fully-charged laptop batteries was two hours of work time, or less if you were taking on processor-intensive work or DVD playback. At the time of writing, the clues to look for in the specs are processing power in advance of 2.8GHz, and if you're buying a Pentium or Celeron based system Acer BATCL50L battery, the lack of the letter M (ie Pentium 4 rather than Pentium M), or no mention that the CPU is mobile-optimised.