Definition: A device used to power electric devices, consisting of a set of electrically connected electrochemical or, archaically, electrostatic cells. A single such cell when used by itself.

Alright class, settle down and listen close, Let’s talk about ‘batteries,’ it's time to compose! The dictionary gave you the facts, quite clear, About these power sources, banishing fear. “A device used to power electric devices,” you see, That’s what a battery does, for you and for me! It’s made of "cells," let that sink in slow, Electrochemical – watch the knowledge grow! Think of them like tiny sparks, a clever design, Turning chemical energy, truly divine. “Arch-aically,” it says, a word from long ago, Electrostatic cells – a scientific flow! A single cell alone, if you give it a try, But put ‘em together, reaching for the sky! They’re connected and working, a powerful team, Providing electricity, a vibrant beam. So remember this lesson, don't you despair, ‘Batteries’ are power – everywhere! Do you have any questions? Let's discuss with glee, Now who can tell me what a battery does for me?