
A battery is a combination of more than 1 cells.
There are two electrodes in a battery, Anode and cathode.
There is elecrolyte filled between two terminals of battery.
The electrodes in the battery contain atoms of certain conducting materials. And the electrolyte between and inside those electrodes contains ions.
Electrolyte is a liquid or gel-like substance that contains electrically charged particles, or ions.
There is potential difference between the two terminals of a battery, and that potential difference is the reason of current flow in circuit.The positive terminal has high potential (positive charge) and the negative terminal has lower potential (negative charge).
The flow of electrons constitute the electric current.
Protons do not participate in this.
The difficiency of electrons acts as positive charges.