A desktop is the starter screen of a computer once it had loaded. If you mean laptop, every 5 years.
It is less professional for an executive desk to have a glass top. Executive desks should be neat and a solid, dark color.
There is a small button battery on the motherboard itself.
It is as simple as changing the battery cables.
No, you don't ever change battery water. Batteries have hydrochloric acid in them, not water, even though you use water to top them off. Do not mess with the acid in your battery. You should always use distilled water to fill your batteries.
The desk should sit high enough so that your legs fit under it. The top of the desk should be matte and not glossy so there are no reflections. http://ehs.columbia.edu/ErgoEvaluateTool.html
Usually ... a desk top will be quicker because speed equals heat and a desk top can have bigger heat sinks. Note that there will be exceptions, but in the long run the desk top will stay ahead.
desktop
No, top it off with Distilled Water.
The airfilter is on top of the battery. Lift the battery cover off and the filter sits on top. Simples!
It should have top posts.
Remove the cables from the top of your battery. Remove the battery stabilizing retaining bolts. Reverse the process to install your new battery.
You can buy and adaptor to connect the top post cables to a side post battery. Or you can simply replace the side post cables with top post cables.