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What Is a Wet Cell Battery?

Automobiles have secondary wet cell batteries that are capable of being recharged.
Wet cell batteries, which operate by liquid electrolyte solutions, are commonly found in motor vehicles.
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  • Originally Written By: Rebecca Partington
  • Revised By: G. Wiesen
  • Edited By: Lucy Oppenheimer
  • Last Modified Date: 14 October 2014
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A battery is a device that creates electrical energy by means of chemical reactions. There are two types of batteries: wet cell and dry cell. A wet cell battery operates by means of a liquid electrolyte solution, while in a dry cell battery the solution is in the form of a paste. Some wet cells can be recharged, while others are only good for a shorter period of time. Eventually, however, all such batteries become unusable and have to be replaced.

Different Types

There are a number of different types of wet cell batteries, categorized as "primary" or "secondary." A primary battery can be used only until its chemicals are exhausted and cannot react with each other anymore. In contrast to this, a secondary battery can be recharged by effectively reversing the internal chemical process used to generate a charge.

Composition of Some Batteries

Most automobiles use a wet cell battery. The lead acid battery, often found in such vehicles, is a secondary battery that contains lead, lead oxide, plates, and a liquid electrolyte solution containing 65% water and 35% sulfuric acid. Some of the plates are anodes attached to the negative terminal, while the others are cathodes attached to the positive terminal.

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How It Works

When a load is attached to the terminals of the wet cell battery, a chemical reaction between the lead, lead oxide, and electrolyte solution occurs. As a result of the reaction, electricity flows through the terminals to the load, and sulfuric acid is removed from the solution and bonded to the plates. When the battery is recharged by passing a reversed current through it, the bonds between the plates and the sulfuric acid are broken and the sulfuric acid returns to the liquid solution, letting it provide more electricity.

Long-Term Use and Replacement

After extended use, a wet cell battery can no longer provide sufficient electricity to the load attached to it. This happens because over time, the material in the positive plates flakes off during the normal expansion and contraction of the discharging and charging cycles. As the material flakes off, the plates become smaller and the flakes form a sediment on the bottom of the battery that eventually makes the plates short out and kills the battery completely.

A wet cell battery often dies more quickly in a hot climate because the heat causes the plates to either accumulate or lose material, and also because water evaporates from the electrolyte solution. In addition, prolonged use of the battery, excessive vibration, and overcharging can cause a battery to die faster. Once this point is reached, it can no longer be recharged and needs to be replaced.

History of Wet Cells

Batteries have been used for over a century, and archaeological evidence shows that galvanic cells may have been used 2,000 years ago. The wet cell battery was one of the first modern battery types to be developed. John Frederic Daniell created the first wet cell battery in 1836, which was superior to previous versions because it was safer and more reliable, although it could not be moved and was quite fragile. Since then, a series of improvements has produced those batteries commonly used today.

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Discuss this Article

anon926527
Post 33

How else and in what other ways are wet cell batteries used?

anon294172
Post 29

When using a dry and wet cell, is it possible to mix them?

anon157244
Post 23

why don't we have just one type of battery, instead of wet or dry cell battery?

anon125293
Post 20

Your question is redundant because cell and battery are synonymous. Anyway, a wet cell contains chemicals that conduct current by forming ions through strong electrical field using a liquid medium. When you say battery, it is a group of dry cell connected together. Moreover, a dry cell is the one that we usually buy in store like everyday battery and energizers which is usually made up of a zinc cup and carbon rod with positive and negative terminals. -- jil

anon59449
Post 13

why do they make wet and dry batteries? i mean how are they different from normal batteries?

someone answer me please!

anon41335
Post 9

what is another name for wet cell battery

anon39852
Post 7

How is a wet cell created?

Hope you have the heart to reply.

anon34086
Post 6

What is the purpose of a wet cell battery?

anon27732
Post 4

are the electrodes of a cell made of the same material?

anon22669
Post 2

what is the wet and dry cell batteries made of, and used for???

anon15568
Post 1

one question: can citric acid be used as an eloctrolyte solution?

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