Your laptop battery should give you at least three solid hours of battery life. Some batteries even offer far higher duration and can give up to eight hours depending on the battery quality. Three or four hours is good battery life as your battery gets older. But note that the hours offered by most batteries reduce with time and how often you use your laptop. Persons who spend long hours on their computers might change their battery sooner than someone who spends far less time on their system. You should also know that you can adopt some other things to give your battery longer battery life.