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=**__GALVANIC CELLS__**= toc by Mr Wong (UNSW High School Chemistry Teacher) __Figure 1:__ A simple Galvanic Cell (1)

The most common application of Galvanic Cells are the one we use the most - Rechargeable and Non-Rechargable Batteries!

A battery usually consists of one galvanic cell or a number of cells joined in a series.

Batteries can be divided into three types:
 * **NON-RECHARGEABLE**
 * BATTERIES** || **RECHARGEABLE**
 * BATTERIES** || **FUEL CELL BATTERIES** ||
 * Dry Cell || Nickel Cadmium || Hydrogen/Oxygen ||
 * Mercury cell || Nickel-metal Hydride || Methane/Oxygen ||
 * Alkaline || Lead-Acid ||  ||
 * Lithium Iodide ||  ||   ||
 * Button Cell ||  ||   ||

We will looking into most of these types of batteries, and will make comparisons between those to the more commonly used ones - dry cell or lead-acid cell, in terms of the chemical components that make up the cell, cost and practicality, impact on society, and environmental impact.

__Figure 2:__ The newest type of AA (alkaline) battery that currently holds the Guinness World Records for longest service life. (2)

(1) Thall, Dr E. (2005) //Galvanic Cell//, Thall's Website- Florida State College at Jacksonville. Retrieved April 19 2012, from [] (2) Brain, M. et. al. (2012) //How Batteries Work//, How Stuff Works. Retrieved April 19 2012, from []
 * __References__**