In the course of this assignment we investigated cells and batteries.
The objects in the above image are commonly known as batteries. Indeed, their labels clearly state that they are batteries.
All the objects displayed in the foreground of the picture above are all commonly referred to as batteries. Technically, however, only one of them is a battery. 
It is the 9-volt battery. It contains six 1.5-volt cells. When cells are connected in the correct series they form a battery. A cell is an object that stores potential energy. Energy is generated in a cell by a chemical reaction and is referred to as 'chemical energy' (Skamp, K. (ed), 2008, p43).
A car battery is another type of battery. 
A car battery, consists of a series of lead acid cells (wet cells).
The correct term for the object above is a cell. In this case an alkaline cell (dry cell).
2 cells do not become a battery until they are connected in the correct way.
The 2 cells above are not assembled to form a battery because the negative sides are touching.
This assembly of cells forms a battery because the negative and positive ends of the two cells are touching. In the image above we have two 1.5V cells forming a 3V battery.
Above are three 1.5V cells assembled in the appropriate series of negative to positive forming a 4.5V battery.
