You should get a couple years out of it, but it really depends on you. If you constantly run it low and then recharge it, that's deep cycling, and will reduce battery life substantially.
Seven years
No the battery is built in but should last 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.
As long as the battery is kept charged then it should last 3-5 years.
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.
30 seconds
The Rechargeable Lithium-Ion Battery Pack should last about six to ten hours of use.
The battery is advertised at having a life of up to 6 hours. Depending upon the usage depend upon he battery to last for 4 hours.
No set answer to that. It depends on the capacity of the battery and the power consumption of what it's connected to.
It depends on the load.
5 years is about average. But it could last 7 years or no more than 3 years. Every time you run the battery down that will shorten the life of the battery.
If it is a quality battery it should last 3-5 years. Now if you run the battery down a few times you decrease it's lifespan. There is no way of telling exactly how long a battery will last. I have had them last 6 years and also had a few that lasted less than 2 years. I am replacing the faactory installed battery on my 2004 V6 Tacoma today. It is just over six years old and shows no indication of being bad, I am just being safe.