it will have caps on it that you can remove.
If it is a sealed battery you do not open it. If it is not a sealed battery simple remove the caps.
It will do no harm.
Nothing. The battery is sealed an no harm will be done.
Yes, but it is not as safe as a sealed battery.
Yes just follow manufactures instructional
can a 12v lawn mower sealed battery be charged with 12v battery charger use on cars
Enough distilled water to cover the plates. Do not open a sealed battery.
You don't need acid to recharge the car battery. You may need to top it with distilled water and put the battery on the charger. You may be able to get the acid from a car battery shop, but some of the new car batteries now come as a sealed unit.
Never if it is a sealed battery. If it has fill caps you check it about every 3 months and fill with Distilled Water only.
On most modern sealed batteries you do not have to add water. On batteries that are not sealed you should check the battery monthly. If you have to add water only add distilled water and never tap water.
Distilled water is preferred and recommended in a non sealed battery. Tap water, with the minerals in it, should not be used unless you had to.
Your car won't turn on.