Many popular sizes are still referred to by old standard or manufacturer designations, and some non-systematic designations have been included in current international standards due to wide use. Technical standards for battery sizes and types are published by standards organizations such as the International Electrotechnical Commission (IEC) and American National Standards Institute (ANSI). The long history of disposable dry cells means that many different manufacturer-specific and national standards were used to designate sizes, long before international standards were agreed upon. Historically the term "battery" referred to a collection of electrochemical cells connected in series however, in modern times the term has come to refer to any collection of cells (or single cell) packaged in a container with external connections provided to power electrical devices, leading to the variety of standardized form factors available today. This article lists the sizes, shapes, and general characteristics of some common primary and secondary battery types in household, automotive and light industrial use.
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