Battery formulation – IEC codes

The open circuit voltage and the capacity of  battery depends on what its made of, i.e. its formulation. This table lists the various formulations and the IEC letter used to indicate them. Please note that the positive electrode chemicals listed in the table below have hyperlinks linking to their related Wikipedia article.


Letter code
Positive electrode
Electrolyte
Negative electrode
Nominal voltage
End-point
voltage
L
Alkaline
Zinc
1.5
1.0
S
Alkaline
Zinc
1.55
1.2
P
Alkalin
Zinc
1.65
1.4
C
Organic
Lithium
3
2.0
B
Organic
Lithium
3
2.0
G
Organic
Lithum
1.5
1.2

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