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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.
No the battery is built in but should last a long time.
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.
As long as the battery is kept charged then it should last 3-5 years.
It will last about two to three hours, usually. However, some laptops can go for six, or even eight hours.
30 seconds
A dell inspiron 700m battery should last for a few years. Most of the time, they die because of hardware problems or spilling. But if they are maintained they will last for a long time.
Impossible to say. A decent battery should last at least 3 years. A great battery may last 5 or more years. Remember every time you run the battery down, you are cutting it's life short. Keep the battery clean and fully charged and it will last a long time.
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.
It depends on the load.
Seven years
No set answer to that. It depends on the capacity of the battery and the power consumption of what it's connected to.