Most all vehicles built sense the mid 1950's use a 12 volt battery. Before that they were using a 6 volt battery.
y not?
Four 12V batteries may not be connected end to end to obtain 36 Volts. But four 12V batteries can be connected end to end to provide 48V and push 36 amps. The actual answer to your question suggests that you drop one 12V battery and use three, not four 12V batteries end to end to obtain 36V.
can a 12v lawn mower sealed battery be charged with 12v battery charger use on cars
No, the batteries in an electric car are much different. Normal automotive batteries are lead acid batteries. Most electric cars use Lithium-Ion batteries.
They don't. They use wet cell batteries.
Yes, both batteries perform the same, but the 7ah battery holds more charge.
Batteries are not a form of fuel. They store energy. Hybrids and electric cars need large batteries as their primary fuel is stored in batteries. Both types of cars use gasoline to charge the batteries. Electric cars also can use the grid to charge. So, if your energy comes from coal, it would be actually a coal fueled unit.
cars
Motorcraft Batteries.
Well unless you mistyped something 500kva is 500,000 watts. That would be 41,666 12 volt batteries!
Depends on your battery. In a lead-acid battery, like a 12V you find in most cars, sulfuric acid is used because hydrochloric acid will not form Pb304 (lead oxide). Pencil batteries are alkaline batteries and use a base instead of acid. However some batteries might accept HCL, just not most.
Which part of the electrical system? Most cars are 12v systems... if they have multiple 12v batteries, those will be run in parallel. If they have 6v batteries (offhand, I know of no cars which do this, although my trade is HD diesel, so it's possible), then those would be run in parallel. As for the remainder of electrical circuits, really depends on the vehicle. You might have to bite the bullet and buy a shop manual for a comprehensive wiring diagram of your vehicle.