From a wall outlet.
Batteries importance is in their inherent capability to store an electric charge.
Generators or storage devices for electric charge which they can release as a "flow of charge" called an "electric current".
Depends on the quality of the batteries and the care that you charge them with.
Batteries and capacitors store electric charge.
Electric cars motors are powered by the batteries the batteries are typically Lead-Acid or Lithium Ion batteries. Batteries will normally stay charged in between 100-300 miles and take 3-8 hours to charge.
Cars and bicycles.
If the cells of the body are metaphorically compared to rechargeable electric batteries, then what you do to charge them is to eat food; they run on nutrients.
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.
Wheelchairs typically used Litihium-Ion batteries. These provide long lasting and multi charge useage.
Definitely IONIC. Because if there were no ions present, then charge would not move, hence no electric flow.
Stick the battery on your tongue. No effect. No charge. If you feel a slight electric shock you know it has a charge
Basically there are three. 100% electric and hybrid electric that uses a small engine to charge the batteries. There is also at least one vehicle that uses a solar cell to help charge the battery.