What are batteries made of?

how batteries are madeThere are countless different types of batteries to power countless electronic items that we use every day, yet we rarely think about what is actually in them.

You can make an electrical current out of anything; zinc, silver, lithium and even potatoes can create an electrical charge to power various items. They work by converting the energy from chemicals into electrical energy that can be used to power an electronic device.

While we could spend a long time explaining what makes up each type of battery, it is much quicker to explain all the basic components required in any battery. And they are:


An anode is the negatively charged part of the circuit. In this part of the battery, electrons build up and they are what make the electrical energy of a battery. This negative end of the battery is then connected to a wire, where the electrodes will flow through to power the product, and then through to the positive end of the battery, known as the cathode. This is where these particles want to end up.


The positively charged end of the battery is also the end of the journey for an electrode. It attracts the negatively charged electrons, which can only reach the positive charge through the wire (and the device you are powering). Without this end of the battery to attract the electrodes from the negatively charged anode, the battery wouldn’t be able to complete an electrical circuit.


So why don’t the electrons just travel through the inside of the battery? Why do they have to go the long way around? It’s because there is a pool of electrolytes between the two charged ends of the battery. Not only does the electrolyte separate the two charged ends, but it also provides the chemical reactions that make electrolytes. When a battery runs out, it means that the chemical energy is spent and the electrolytes are no longer able to produce electrons.

And there we have it: the three base components of your average battery. To compare brands of batteries, see our customer satisfaction ratings.

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