Batteries

[feelap]

Whats actually inside a battery, just a normal AA duracell battery?

[Clanad]

For the two most common types of batteries, Zinc-carbon battery - Also known as a standard carbon battery, zinc-carbon chemistry is used in all inexpensive AA, C and D dry-cell batteries. The electrodes are zinc and carbon, with an acidic paste between them that serves as the electrolyte.

Alkaline battery - Used in common Duracell and Energizer batteries, the electrodes are zinc and manganese-oxide, with an alkaline electrolyte.
There are several other types of batteries, but, generally the principles are the same.  (Source: How Stuff Works)

[Octavius]

see here:

http://electronics.howstuffworks.com/battery9.htm

[JudgeJ]

When I was a lad and I wanted to know the answer to this sort of thing, I would cut one in half and have a look!

[gen2]

Don't they teach Leclanch� cells in school science classes any more?