it depends on the capacity and voltage of the battery, generally speaking, there are 4-cells, 6-cells and 9-cells batteries on the market, the bigger capacity and voltage will have a longer last time
The battery life on mini laptops such as netbooks is much better than for full-sized laptops. They can last 6 hours or more, depending upon what type of activities are being done.
On average, a Dell Latitude D620 battery will last for approximately three to five years. Most batteries for laptops generally last between three to five years.
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It will last about two to three hours, usually. However, some laptops can go for six, or even eight hours.
Most laptops have a battery indicator which is found on the bottom right hand of the screen.This will let you know how much battery life is left and will give you an idea of when you will need to charge it.
Asus makes incredible laptops. Fast, convenient, stylish, and they have a large battery life. They are pricey but they will last a long time and you will get your moneys worth out of it.
We use laptops because they are portable, and are battery powered, so we can use laptops on airplanes, or wherever we want to. By the way, laptops are computers. I think you meant desktop.
The Thinkpad T420 is one of the longest lasting laptops in terms of battery life. Sony Vaio S or Z can have an extended battery sheet (adding almost no thickness) that will make your laptop have ridiculously long battery life.
a car battery last for about 3-5 years
As long as the battery is kept charged then it should last 3-5 years.
a panasonic triple a battery last about 4 hours nonstop.
Slower CPU's do not necessarily use less power, but slowing down the speed of your current processor, will save your battery.