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The same physically interchangeable cell size or battery size may have widely different characteristics; physical interchangeability is not the sole factor in substituting a battery. [ 1 ] The full battery designation identifies not only the size, shape and terminal layout of the battery but also the chemistry (and therefore the voltage per ...
SR44 and LR44 have a very different discharge curve. A product designed for an SR44 battery will not work well if you substitute an LR44. 71.106.228.229 17:12, 21 March 2010 (UTC) LR44 and SR44 are the same physical size. However, the terminal voltage of the SR version is a tad higher (1.55v -v- 1.5v) and its capacity is also higher.
Standard battery nomenclature describes portable dry cell batteries that have physical dimensions and electrical characteristics interchangeable between manufacturers. The long history of disposable dry cells means that many manufacturer-specific and national standards were used to designate sizes, long before international standards were reached.
Button, coin, or watch cells. A button cell, watch battery, or coin battery is a small battery made of a single electrochemical cell and shaped as a squat cylinder typically 5 to 25 mm (0.197 to 0.984 in) in diameter and 1 to 6 mm (0.039 to 0.236 in) high – resembling a button.
Under certain conditions, some battery chemistries are at risk of thermal runaway, leading to cell rupture or combustion. As thermal runaway is determined not only by cell chemistry but also cell size, cell design and charge, only the worst-case values are reflected here. [64]
Comment, belated: it may make sense to merge the articles for all comparable coin cells (same chemistry, as SR44, SR927; maybe interchangeable to some extent, as LR44, SR44); for disposable lithiums; and for the various families of rechargeable lithiums. I agree with Wtshymanski to the extent that a detailed discussion of type CR2032 is rather ...
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