Button cell battery is, as the name suggests, small, round, flat batteries similar in size to buttons you find on clothing; they are 5/16 of an inch in diameter, to be precise. Button cells are used to power small portable electronics devices such as wrist watches, pocket calculators, and hearing aids. Lithium cells are generally similar but somewhat larger; they tend to be called lithium cells or batteries or coin cells rather than button cells.
What is LR44 Button Cell?
A battery may consist of a single cell or two or more cells in a single package, such as the 2CR5 (two lithium cells) or a 4LR44 (four alkaline LR44 cells), or a 1604 9-volt battery which has six cells. lr44 button cell batteries produces 1.5 volts, but only retain a small amount of energy, so they are used to power items that draw very little power, such as LED displays and watches. If you have an item that uses a small amount of amount of electrical energy, but requires more than 1.5 volts, arrange your LR41 button cell batteries in series and you can increase the voltage. For example six LR41 button cells arranged in series produce 9 volts, enough to power a strip of LED lights.
Package Size of Button Cell Battery
Package size of button batteries using standard names is indicated by a two-digit code representing a standard case size, or a three- or four-digit code representing the cell diameter and height. The first one or two digits encode the outer diameter of the battery in whole millimeters, rounded down; exact diameters are specified by the standard, and there is no ambiguity, e.g., any cell with an initial "9" is 9.5 mm in diameter, no other value between 9.0 and 9.9 is used. The last two digits are the overall height in tenths of a millimeter.
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This article is come from:http://www.mobilesaccessories.net/index.php/views-of-button-cell-battery.htm
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