Batteries are used to power many different devices. We can find them in our cell phones, tablets, laptops, watches, cars and many more. They are quite commonly used device. Batteries are different sizes and shapes and offer different capacity and voltage.
What is a battery
Batteries are a power package. They produce electrical energy. They produce the same electricity as we use at home, however, they are limited by their capacity and properties. The battery has 2 points that are connected to an electronic device. They are often referred to as a positive and negative end.
The battery has few main components, it has 2 electrodes and an electrolyte, which is between the electrodes. This is packed inside a metal or plastic package. A cell is a single power source, and a battery can connect several cells to produce more power. When we connect a battery to an electronic device electrons start moving from one end of the battery, through the circuit of the device which provides it with electricity, to the other end of the battery. This continues until we stop the device or the electrolyte of the battery is transformed.
How do batteries work
When a battery is connected to a load for example a light, electrons starts moving from one end to the other end powering the light. The positive side of the battery is connected to the electrode, and this is called cathode. The negative side of the battery is called anode. Since the positive and negative end of the battery are separated by chemical (electrolyte), chemical reactions start. It generates positive ions and electrons. The positive ions flow into the elctrolyte and the electrons flow to the circuit of the device (the lighbulb in oru example)to the positive electrode. Then electrons combine with ions. This happens because electrons cannot go through the electrolyte so they use the circuit to travel to the other side.