how to make the battery lasts longer ?

Question:I’ve had mySony laptop batteryfor just over a year. I tend to keep the charger plugged in most of the time but i’ve noticed that whenever I unplug it the battery does not last long before I have to recharge. Is there anything I can do to help make it lasts longer? Answer:If it is set correctly, the battery needs to be replaced. The best way to use a laptop is to let the battery go as low as possible and then plug it in to allow a full charge. Otherwise the battery will slowly become useless.And i suggestion you buy new one(HP Pavilion ze1200 battery , HP Presario V2000 battery , HP Presario V4000 battery , HP Presario V5000 battery , HP F2019 battery ) in order to need from time to time .