Mine runs for about 6 hrs on a full charge, playing MP3's, 5 second back light delay, and lowest screen brightness settings.
Every time you run an automobile battery down, you cut the life of the battery. These batteries are not designed to be run down. They are designed to hold a charge continuously. Run the battery down three or four times and you will ruin the battery.
No, a deep cycle battery is designed to be run completely down without doing harm to the battery. A normal automotive battery be it diesel or gasoline is not designed to be run flat and every time it is run flat it's life is shortened.
Battery run-time on a laptop is difficult to determine. Actual battery running time depends upon the power demands made by the equipment. The use of the screen, the hard drive and other accessories results in an additional drain upon the battery, effectively reducing its running time. The total run-time of the laptop battery is also dependent upon the design of the equipment. Generally, a new Hi-Capacity laptop battery will run 30% to 50% longer than the old laptop battery did when it was new.
Time for a battery replacement. Go to eBay, its worth it.
yes
yes , most of the time it is a good idea to run it so it doesnt run down your battery
Unless it is a 12 volt DC box fan you cannot run it at all. If it is a 12 volt fan the time it will run depends on it's size and at what speed you run it and the condition of the battery. All you can do is try it.
Run time will vary on individual laptop computers, based on the applications being used (i.e. high graphics, games), the number of times something is saved or retrieved from the hard drive and/or CD Rom drive, the memory of laptop, and chemistry and capacity of the laptop battery. A realistic average run-time for a laptop battery is 1.5 to 3 hours. Again, run time will vary on applications being used and individual laptops.
The Manufacturer says maximum Battery Run Time is 8 Hour.
As long as the battery is functional you can continue to jump it. However, know that every time you run a car battery down you shorten its life. A battery that is designed to be run completely down and then recharged is called a deep cycle battery. Automobile batteries are not deep cycle batteries. Discharging them completely causes damage to the battery itself.
If you have put the DS on a high brightness setting, this can very significantly affect the time it takes for the battery to run down.
2100mAh battery will last longer due to higher capacity; probably for nearly 50% longer.