Which of the following statements describes a battery?

Batteries store electric charge.
The negative electrode of a battery has an excess of positive charge.
Batteries use electrolytes and similar metals to produce a flow of electrons.
Batteries convert chemical potential energy into electric energy.

The negative electrode of a battery has an excess of positive charge

Explanation:

This is because in every battery, there is a negative electrode ( cathode ) and only positive charge is deposited on it.

For other statements:

Batteries donot store electric charge but they store chemical energy

Some batteries donot use metals for the flow of electrons, but some use hydrogen gas at a pressure of 1 atmosphere.

Batteries convert chemical potential energy into electric energy.

Explanation:

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