George Leclanché patents the first dry cell battery which contains a conducting solution (electrolyte) of ammonium chloride, a negative terminal of zinc, and a positive terminal of manganese dioxide.


This timeline entry suggestion courtesy of
Prof. Dom Swinkel, University of Newcastle,
NSW, Australia.



Further info :

Corrosion Doctors - George Leclanché
http://corrosion-doctors.org/Biographies/LeclancheBio.htm

Inventors About - Battery History
http://inventors.about.com/library/inventors/blbattery.htm

See also :
1833 - Faraday - Electrolysis & 1799 - Volta