Battery And How It Works
A battery is a chemical device that is used as a source for energy. It is a mobile contraption and consists of three elements: anode - negative charge, cathode - positive charge and electrolyte – a liquid composite that helps in energy flow. |
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Functioning of a Battery
Let’s use a demonstration to understand how a battery works. Take a simple battery and connect it with a light bulb. The process of transfer of power from the battery to the light bulb begins. The mode involves surge of electrons from anode to cathode. The central point of transfer is the bulb that has been connected to the battery.
The energy that is circulated between battery and the bulb, results in lightening of the latter. Over a period of time, this circulation lowers the charge of the battery. This is because the anode and cathode experience electrochemical variations. As a consequence the voltage of the battery drops.
This is an ongoing process. It will continue till the time anode will no longer be giving out electrons and cathode will not be receiving them. On reaching this condition, the battery will have negative voltage output. The bulb will not get any charge and stop lightening.
The life of the battery depends on its type and size. Other factors are the amount of voltage the bulb (or any other device) would use and of course the time period for which the battery is utilized.
The span of a battery is characterized by two parameters:
- Ampere (Milliampere) Hours: this defines the rate of flow of voltage in amperes. It is multiplied by the hours/minutes it ran.
- Hours and minutes: This is the duration of time the battery runs.
The chemical composition of the battery and the appliance it is attached to, determine its lifetime.
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A battery is a device that converts chemical energy into electrical energy for use by electronic appliances. The chemical energy is stored in two or more electrochemical cells. The battery has both positive and negative electrodes that help facilitate the transfer of energy 
