How do you calibrate the battery for your sony laptop

Once the battery for sony laptop builds a memory, there is very little you can do to repair it. New, the batteries hold almost two hours of use. However, the battery to my sony computer will only hold about 40 minutes of a charge.

The drawback to the sony laptop (and a lot of the older laptops and a good number of the new laptops) is that there is not an effective system of power management. This is seen more often with cell phones, where there is a "smart chip" that manages the charging of the laptop batteries without creating a "memory" to the sony laptop battery.