Redox

Voltaic cell diagram http://mooni.fccj.org/%7Eethall/2046/ch18/zncu.gif

Voltaic Cell Animation http://www.chem.iastate.edu/group/Greenbowe/sections/projectfolder/flashfiles/electroChem/voltaicCell20.html

History of the Battery http://www.battery-technology.co.uk/index.htm