  Small lithium-manganese battery. 
This small lithium cell is listed under manganese because, while everyone calls them "lithium batteries", they also have other elements in the electrolyte, in this case manganese dioxide. 
Source: Radio Shack 
Contributor: Theodore Gray 
Acquired: 2 April, 2009 
Text Updated: 7 April, 2009 
Price: $5 
Size: 0.5" 
Purity: <50%
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