How do you prolong laptop battery life?

If you need to extend the life of your sony laptop while away from its AC adapter, buy a sony large capacity battery. This will increase your battery life by approximately 1.5 times. When you're at home, keep your laptop plugged into the wall with the supplied AC adapter. This will keep your battery charged at 100 percent. When on the road, avoid using multimedia features such as the DVD player and speakers, as these drain the battery quite a bit. If you're not using the Internet, turn off your wireless connection. If you need to leave the computer for a period of time, close the cover so it goes into hibernation mode. You can save additional battery power by turning off Bluetooth and removing USB devices. Also, avoid exposing it to extremely hot or cold temperatures.