Means of realizing long battery life in portable PCs

Some of the easiest ways of making battery life longer in portable personal computer (PC) are realizing low power consumption and high capacity battery. Though it is necessary to adopt various techniques for realizing such conditions, it is incomplete to fully satisfy the user requirements for a portable PC, because high capacity battery tends to increase its weight. Therefore, we have to apply some techniques for decreasing weight, including casework. This paper describes various techniques not only to realize low power consumption and high capacity battery, but also to achieve light weight.