Batteries & Chargers
Batteries are devices that are made up of one or more cells that go through different chemical reactions. These cells are responsible for the flow of electrons in a circuit. Thus, it transforms chemical energy to electrical energy.
The three basic components of batteries are the cathode, anode, and an electrolyte (which reacts chemically with the cathode and anode). Once a battery’s cathode and anode connect to a circuit, it results to a chemical reaction. This is what makes the electrons in the circuit. A second chemical reaction happens there.
If a battery’s cathode and anode are consumed or aren’t usable in the reaction anymore, no electricity is produced. Thus, the battery stops working and is considered dead.
Chargers are almost always set in the background, but they are just as important as batteries. Chargers are what help ensure that batteries perform well and last long. As the energy source, it feeds electric current through the batteries for a specific time or period.
Types of Batteries
There are two general types of batteries, namely: primary batteries and secondary batteries.
- Primary batteries are common among many industries and households. These are the batteries composed of electrochemical cells with irreversible electrochemical reactions. Therefore, once they are drained of energy, they cannot be recharged. Alkaline batteries are the most common example of primary batteries.
These batteries take many forms, like AA batteries and coin cells. They are used for products like toys, remote controls, and wristwatches.
- Secondary batteries have electrochemical cells that produce reversible chemical reactions when a specific voltage is applied into them. These are commonly known as “rechargeable batteries”. Secondary batteries are ideal for applications or products that drain energy fast. Some examples are electric vehicles and mobile phones.