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- Button_cell abstract "A watch battery or button cell is a small single cell battery shaped as a squat cylinder typically 5 to 20 mm in diameter and 1 to 6 mm high—like a button on a garment, hence the name. 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 either lithium cells or batteries or coin cells rather than button cells.Devices using button cells are usually designed to use a cell giving a long service life, typically well over a year in continuous use in a wristwatch. Most button cells have low self-discharge and hold their charge for a long time if not used. Higher-power devices such as hearing aids, where high capacity is important and low self-discharge less so as the cell will usually be used up before it has time to discharge, may use zinc-air cells which have much higher capacity for a given size, but discharge over a few weeks even if not used.Button cells are single cells, usually disposable primary cells. Common anode materials are zinc or lithium. Common cathode materials are manganese dioxide, silver oxide, carbon monofluoride, cupric oxide or oxygen from the air. Mercuric oxide button cells were formerly common, but are no longer available due to the toxicity and environmental hazard of mercury.A metal can forms the bottom body and positive terminal of the cell. The insulated top cap is the negative terminal.Cells of different chemical composition made in the same size are mechanically interchangeable. However, the composition can affect service life and voltage stability. Using the wrong cell may lead to short life or improper operation (for example, light metering on a camera requires a stable voltage, and silver cells are usually specified). Sometimes different cells of the same type and size and specified capacity in mAh are optimised for different loads by using different electrolytes, so that one may have longer service life, than the other if supplying a relatively high current.".
- Button_cell thumbnail Coin-cells.jpg?width=300.
- Button_cell wikiPageExternalLink data.energizer.com.
- Button_cell wikiPageExternalLink cr2032.pdf.
- Button_cell wikiPageExternalLink 61;OJ:L:2006:266:0001:0014:en:PDF.
- Button_cell wikiPageExternalLink batteryequiv2.htm.
- Button_cell wikiPageExternalLink piles-bouton.com.
- Button_cell wikiPageExternalLink MaineDEPButtonBatteryReportFinal12-17-04.pdf.
- Button_cell wikiPageID "4902394".
- Button_cell wikiPageRevisionID "587139145".
- Button_cell hasPhotoCollection Button_cell.
- Button_cell subject Category:Battery_shapes.
- Button_cell type Abstraction100002137.
- Button_cell type Attribute100024264.
- Button_cell type BatteryShapes.
- Button_cell type Property104916342.
- Button_cell type Shape105064037.
- Button_cell type SpatialProperty105062748.
- Button_cell comment "A watch battery or button cell is a small single cell battery shaped as a squat cylinder typically 5 to 20 mm in diameter and 1 to 6 mm high—like a button on a garment, hence the name. Button cells are used to power small portable electronics devices such as wrist watches, pocket calculators, and hearing aids.".
- Button_cell label "Button cell".
- Button_cell label "Knoopcel".
- Button_cell label "Knopfzelle".
- Button_cell label "Pila de botón".
- Button_cell label "Pile bouton".
- Button_cell label "Миниатюрный элемент питания".
- Button_cell label "ボタン型電池".
- Button_cell label "鈕扣電池".
- Button_cell sameAs Knoflíková_baterie.
- Button_cell sameAs Knopfzelle.
- Button_cell sameAs Pila_de_botón.
- Button_cell sameAs Pile_bouton.
- Button_cell sameAs ボタン型電池.
- Button_cell sameAs 단추형_전지.
- Button_cell sameAs Knoopcel.
- Button_cell sameAs m.0ctbfd.
- Button_cell sameAs Q1361661.
- Button_cell sameAs Q1361661.
- Button_cell sameAs Button_cell.
- Button_cell wasDerivedFrom Button_cell?oldid=587139145.
- Button_cell depiction Coin-cells.jpg.
- Button_cell isPrimaryTopicOf Button_cell.
