With the discussion of Battereis in general and some Semanits problems I
thought it would be a good place fora a Little Memory Testing and a Battery
Time line.

Forst how many rembember the Old Home Battery operated Radios? My
grandmothers Farm House i nMissoury still didn't have elctrical power in
the 40's. Those Redios typicaly used more then one Battery. There was "A"
batery, a "B" battery and some times a "C" Battery. How
many can rembember
their uses and what are they?

Also how many rembmber the "F" cell in the current series designations of
"AA", "AA", "AAA", "AAAA",
"B", and "D". They are currently being sold by
the way sometiems called by another name.

Here is the Battery Invention time line I have.

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Battery History 
--------------------------------------------------------------------------------
A battery, which is actually an electric cell, is a device that produces
electricity from a chemical reaction. Strictly speaking, a battery consists
of two or more cells connected in series or parallel, but the term is
generally used for a single cell. A cell consists of a negative electrode;
an electrolyte, which conducts ions; a separator, also an ion conductor;
and a positive electrode. Continue with How Batteries Work/Battery Types 
Timeline of Battery History

1748 - Benjamin Franklin first coined the term "battery" to describe an
array of charged glass plates. 

1780 to 1786 - Luigi Galvani demonstrated what we now understand to be the
electrical basis of nerve impulses and provided the cornerstone of research
for later inventors like Volta. 

1800 - Alessandro Volta invented the voltaic pile and discovered the first
practical method of generating electricity. Constructed of alternating
discs of zinc and copper with pieces of cardboard soaked in brine between
the metals, the voltic pile produced electrical current. The metallic
conducting arc was used to carry the electricity over a greater distance.
Alessandro Volta's voltaic pile was the first "wet cell battery" that
produced a reliable, steady current of electricity.  

1836 - Englishman, John F. Daniel invented the Daniel Cell that used two
electrolytes: copper sulfate and zinc sulfate. The Daniel Cell was somewhat
safer and less corrosive then the Volta cell.  

1839 - William Robert Grove developed the first fuel cell, which produced
electrical by combining hydrogen and oxygen. 

1839 to 1842 - Inventors created improvements to batteries that used liquid
electrodes to produce electricity. Bunsen (1842) and Grove (1839) invented
the most successful. 

1859 - French inventor, Gaston Plante developed the first practical storage
lead-acid battery that could be recharged (secondary battery). This type of
battery is primarily used in cars today. 

1866 - French engineer, Georges Leclanche patented the carbon-zinc wet cell
battery called the Leclanche cell. According to The History of Batteries:
"George Leclanche's original cell was assembled in a porous pot. The
positive electrode consisted of crushed manganese dioxide with a little
carbon mixed in. The negative pole was a zinc rod. The cathode was packed
into the pot, and a carbon rod was inserted to act as a currency collector.
The anode or zinc rod and the pot were then immersed in an ammonium
chloride solution. The liquid acted as the electrolyte, readily seeping
through the porous cup and making contact with the cathode material. The
liquid acted as the electrolyte, readily seeping through the porous cup and
making contact with the cathode material." 

1868 - Twenty thousand of Georges Leclanche's cells were now being used
with telegraph equipment. 

1881 - J.A. Thiebaut patented the first battery with both the negative
electrode and porous pot placed in a zinc cup. 

1881 - Carl Gassner invented the first commercially successful dry cell
battery (zinc-carbon cell). 

1899 - Waldmar Jungner invented the first nickel-cadmium rechargeable
battery. 

1901 - Thomas Alva Edison invented the alkaline storage battery. 

1949 - Lew Urry invented the small alkaline battery. 

1954 - Gerald Pearson, Calvin Fuller and Daryl Chapin invented the first
solar battery. 
NOTE; This is not actualy a battery as it does not store energy and only
wroks with Photo energy striking it.

The following battery developments were origional researched for the Space
Program.

1990 Commercialization of the NiMH Battery

1999 Commercialization of the Lithium-Ion Battery

2002 Limited production of the Portable PEM Fuel Cel
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