What is the Difference between Cell and Battery?

Cell

Single Power source is called Cell

It is denoted by Large line and Small Line

Large Line denotes Positive end and Small line denotes Negative end as shown below

Battery

Group of cells is called Battery

It is denoted by Large Line - Small Line and then Large Line - Small Line Again

Current Flows only in Good Conductor of Electricity

It does not flow in Bad Conductor of Electricity