Why exactly we need batteries

Any electronic wireless gadget, be it a laptop, Smartphone, remote, or watch is run by batteries. Without these energy sources, we can’t imagine any situation in today’s world. Even electric cars and space missions would not be possible without Batteries. Let’s see how many types of these gadgets are there and see their classification, terminology, and specifications.

Before we involve in the details of the discussion, let’s see the difference between a battery and a cell.

Cell: A cell delivers only DC voltage and in very small quantities 1.5 – 3V.

Battery: The functionality of the battery is the same as that of a cell, but a battery is a pack of cells arranged in a series or parallel fashion so that the voltage can be raised to the preferred levels.

The power bank is the best-known example of a battery that is used to charge up smartphones. If we ever see the inside of a power bank, a set of batteries like No. 1 Quality Wheelchair Battery, Top Selling Abc Battery Dry Cell, Top Quality Nickel Cadmium Battery, Top Quality Lithium Ion Batteries, Top Quality iCell Tech mercury Free Battery, Black Box Automotive Battery 12 Volt, jump starter with air compressor are found which are arranged serially based on the requirement to increase the voltage and the current.

Battery cells generally consist of three main components;

  1. The Anode (Negative Electrode)
  2. The Cathode (Positive Electrode)
  3. The electrolytes

The anode is a negative electrode that generates electrons to the external circuit to which the battery is connected.

With the batteries connected and initiated electron causes a potential difference between the two electrodes: positive and negative. Then the electrons naturally try to redistribute themselves, this is prevented by the electrolyte, so when an electrical circuit is connected, it provides a clear path for the electrons to move from the Anode (Negative Electrode) to the Cathode (Positive Electrode) for powering the circuit to which it is related.

The different types of battery cells can be made by changing the arrangement of Anode, Cathode, and Electrolyte in different combinations of chemistries.

Let’s understand the different types of batteries and their uses, so let’s get started.


Types of Batteries

Batteries are generally classified into different categories and types, following the chemical composition, size, form, and cases. Under all of these, there are two major battery types:  Primary Batteries and Secondary Batteries.

Primary batteries which are made of electrochemical cells can’t be reversed, and so cannot be recharged after depletion.

The secondary batteries, on the other hand, are made of reversible electrochemical cells. These batteries are called rechargeable batteries. They are typically used in high drain applications and other scenarios. Lithium-ion (Li-ion), Nickel Cadmium (Ni-Cd), Nickel-Metal Hydride (Ni-MH), and Lead-Acid.

Let’s see how these rechargeable batteries work.

Lithium-ion (Li-ion)

These are used in different forms of electric vehicles and other portable gadgets including mobile phones, smart devices, and several other battery appliances used at home. They also find applications in aerospace and military applications due to their lightweight feature.

Nickel Cadmium (Ni-Cd):

The nickel–cadmium battery is developed using nickel oxide hydroxide and metallic cadmium as electrodes.  Ni-Cd batteries can maintain voltage and hold a charge when not in use. However, NI-Cd batteries easily fall, a victim of the dreaded “memory” effect, if a partially charged battery is recharged which lowers the future capacity of the battery.

Nickel-Metal Hydride (Ni-MH)

Nickel metal hydride (Ni-MH) is another type used for rechargeable batteries. The chemical reaction at the positive electrode of batteries is similar to that of the nickel-cadmium cell (NiCd), with both battery types using the same nickel oxide hydroxide (NiOOH). However, the negative electrodes in Nickel-Metal Hydride use a hydrogen-absorbing alloy instead of cadmium which is used in NiCd batteries.


Lead-Acid Batteries

Lead-acid batteries and Inverter Solar ESS Powerwall Home, Best Quality SLA battery with Terminal, Best Quality SAS HDD Battery are a low-cost, steady power workhorse used in heavy-duty applications. They are usually very large and weighty.  They’re always used in non-portable devices like solar-panel energy storage, vehicle ignition and lights, backup power, and load levelling in the power generation/distribution. The lead-acid is the oldest type of rechargeable battery and still very significant for today’s world.

Simply knowing the types of batteries are not enough. You should know the right types of batteries for your right gadgets.

Consider the factors below when you think of buying the right type of battery.

  1. Energy Density:The energy density which determines the total amount of energy, can be stored per unit mass or volume. This determines how long your device stays on before it needs a recharge.
  2. Power Density:Maximum rate of energy discharge per unit mass or volume. Low power: laptop, i-pod. High power: power tools.
  3. Safety: It is important to consider the temperature at which the device you are building will work. At high temperatures, certain battery components will breakdown and can undergo exothermic reactions. High temperatures generally reduce the performance of most batteries.
  4. Life cycle durability:The stability of energy density and power density of a battery with repeated cycling (charging and discharging) is needed for the long battery life required by most applications.
  • 5. Cost: Cost is an important part of any engineering decisions you will be making. It is important that the cost of your battery choice is commensurate with its performance and will not increase the overall cost of the project abnormally.