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<title>Button cell</title>

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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Button cell</span></span>

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<p>A <b>button cell</b>, <b>watch battery</b>, or <b>coin battery</b> is a small <a href="Battery_(electricity)" class="mw-redirect" title="Battery (electricity)">battery</a> made of a single <a href="Electrochemical_cell" title="Electrochemical cell">electrochemical cell</a> and shaped as a squat <a href="Cylinder" title="Cylinder">cylinder</a> typically 5 to 25 mm (0.197 to 0.984 in) in <a href="Diameter" title="Diameter">diameter</a> and 1 to 6 mm (0.039 to 0.236 in) high – resembling a <a href="Button" title="Button">button</a>. <a href="Stainless_steel" title="Stainless steel">Stainless steel</a> usually forms the bottom body and <a href="Electric_charge" title="Electric charge">positive</a> <a href="Terminal_(electronics)" title="Terminal (electronics)">terminal</a> of the cell; insulated from it, the metallic top cap forms the <a href="Electric_charge" title="Electric charge">negative</a> terminal.

</p>

<p>Button cells are used to power small <a href="Portable_electronics" class="mw-redirect" title="Portable electronics">portable electronics</a> devices such as <a href="Wrist_watch" class="mw-redirect" title="Wrist watch">wrist watches</a>, <a href="Pocket_calculator" class="mw-redirect" title="Pocket calculator">pocket calculators</a>, and <a href="Remote_keyless_system" title="Remote keyless system">remote key fobs</a>. Wider variants are usually called <b>coin cells</b>. Devices using button cells are usually designed around 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, holding their charge for a long time if not used.

</p><p>Button cells are usually disposable <a href="Primary_cell" class="mw-redirect" title="Primary cell">primary cells</a>, but some are <a href="Rechargeable_battery" title="Rechargeable battery">rechargeable</a> secondary cells. Common chemistries include <a href="Zinc" title="Zinc">zinc</a>, <a href="Lithium" title="Lithium">lithium</a>, <a href="Manganese_dioxide" title="Manganese dioxide">manganese dioxide</a>, and <a href="Silver_oxide" title="Silver oxide">silver oxide</a>. <a href="Mercury_battery" title="Mercury battery">Mercuric oxide</a> button cells were formerly common, but are no longer available due to the <a href="Toxicity" title="Toxicity">toxicity</a> and <a href="Natural_environment" title="Natural environment">environmental</a> <a href="Mercury_(element)#Toxicity_and_safety" title="Mercury (element)">effects of mercury</a>.

</p><p>Button cells are dangerous for small children, as when swallowed they can cause severe internal burns and significant injury or death.<sup id="cite_ref-BBC,_2016_1-0" class="reference"><a href="#cite_note-BBC,_2016-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> <a href="Duracell" title="Duracell">Duracell</a> has attempted to mitigate this by adding a <a href="Bitterant" title="Bitterant">bitter coating</a> to their batteries.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="Properties_of_cell_chemistries">Properties of cell chemistries</h2></div>

<p>Cells of different chemical composition made in the same size are mechanically interchangeable. However, the composition can affect service life and <a href="Chemical_stability" title="Chemical stability">voltage stability</a>. Using the wrong cell may lead to short life or improper operation (for example, <a href="Light_meter" title="Light meter">light metering</a> on a camera requires a stable voltage, thus silver cells are usually specified). Sometimes different cells of the same type, size and capacity are optimized for different loads by using different <a href="Electrolytic_capacitor" title="Electrolytic capacitor">electrolytes</a>, so that one may have longer service life than the other when supplying a relatively high <a href="Electric_current" title="Electric current">current</a>.

</p><p><a href="Alkaline_battery" title="Alkaline battery">Alkaline batteries</a> are made in the same button sizes as the other types, but typically provide less capacity and less stable voltage than more costly silver oxide or lithium cells.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>

</p><p><a href="Silver-oxide_battery" class="mw-redirect" title="Silver-oxide battery">Silver cells</a> may have an output voltage that is stable until it suddenly drops at end of life. This varies for individual types; one manufacturer (<a href="Energizer" title="Energizer">Energizer</a>) offers three silver oxide cells of the same size, 357–303, 357-303H and EPX76, with capacities ranging from 150 to 200 <a href="Ampere_hour" class="mw-redirect" title="Ampere hour">mAh</a>, <a href="Voltage" title="Voltage">voltage</a> characteristics ranging from gradually reducing to fairly constant, and some stated to be for continuous low drain with high pulse on demand, others for photo use.

</p><p><a href="Mercury_battery" title="Mercury battery">Mercury batteries</a> also supply a stable voltage, but are banned in many countries due to their <a href="Toxicity" title="Toxicity">toxicity</a> and environmental impact.

</p><p><a href="Zinc-air_battery" class="mw-redirect" title="Zinc-air battery">Zinc-air batteries</a> use air as the <a href="Depolarizer" title="Depolarizer">depolarizer</a> and have much higher capacity than other types, as they take that air from the atmosphere. Cells have an air-tight seal which must be removed before use; they will then dry out in a few weeks, regardless of use.

</p><p>For comparison, the properties of some cells from one manufacturer with diameter 11.6 mm and height 5.4 mm were listed in 2009 as:<sup id="cite_ref-energizer2_4-0" class="reference"><a href="#cite_note-energizer2-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>

</p>

<ul><li>Silver: capacity 200 mAh to an end-point of 0.9 V, <a href="Internal_resistance" title="Internal resistance">internal resistance</a> 5–15 Ω, weight 2.3 g</li>

<li>Alkaline (manganese dioxide): 150 mAh (0.9), 3–9 Ω, 2.4 g</li>

<li>Mercury: 200 mAh, 2.6 g</li>

<p>Examining datasheets for a manufacturer's range<sup id="cite_ref-energizer2_4-1" class="reference"><a href="#cite_note-energizer2-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> may show a high-capacity alkaline cell with a capacity as high as one of the lower-capacity silver types; or a particular silver cell with twice the capacity of a particular alkaline cell. If the powered equipment requires a relatively high voltage (e.g., 1.3 V) to operate correctly, a silver cell with a flat discharge characteristic will give much longer service than an alkaline cell—even if it has the same specified capacity in mAh to an end-point of 0.9 V. If a device seems to "eat up" batteries after the original supplied by the manufacturer is replaced, it may be useful to check the device's requirements and the replacement battery's characteristics. For <a href="Caliper" class="mw-redirect" title="Caliper">digital calipers</a>, in particular, some are specified to require at least 1.25 V to operate and others 1.38 V.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-battery_6-0" class="reference"><a href="#cite_note-battery-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>

</p><p>While alkaline, silver oxide, and mercury batteries of the same size may be mechanically interchangeable in any given device, use of a cell of the right voltage but unsuitable characteristics can lead to short battery life or failure to operate equipment. Common <a href="Lithium_battery" title="Lithium battery">lithium</a> primary cells, with a terminal voltage around 3 volts, are not made in sizes interchangeable with 1.5 volt cells. Use of a battery of significantly higher voltage than equipment is designed for can cause permanent damage.

</p>

<div class="mw-heading mw-heading2"><h2 id="Type_designation">Type designation</h2></div>

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</style><div role="note" class="hatnote navigation-not-searchable">See also: <a href="Battery_nomenclature" title="Battery nomenclature">Battery nomenclature</a></div>

<p><a href="International_standard" title="International standard">International standard</a> <a href="International_Electrotechnical_Commission" title="International Electrotechnical Commission">IEC</a> 60086-3 defines an alphanumeric coding system for "Watch batteries". Manufacturers often have their own naming system; for example, the cell called LR1154 by the IEC standard is named AG13, LR44, 357, A76, and other names by different manufacturers. The IEC standard and some others encode the case size so that the numeric part of the code is uniquely determined by the case size; other codes do not encode size directly.

</p><p>Examples of batteries conforming to the IEC standard are CR2032, SR516, and LR1154, where the letters and numbers indicate the following characteristics.

</p>

<div class="mw-heading mw-heading3"><h3 id="Electrochemical_system">Electrochemical system</h3></div>

<p>The first letter in the IEC standard system identifies the chemical composition of the battery, which also implies a nominal voltage:

</p>

<th>Letter<br> code

</th>

<th>Common<br> name

</th>

<th>Positive<br> electrode

</th>

<th>Electrolyte

</th>

<th>Negative<br> electrode

</th>

<th>Nominal<br> voltage (V)

</th>

<th>End-point<br> voltage (V)

</th>

<th>Maximum<br> voltage (V)

</th>

<th>Comments

</th></tr>

<tr>

<td><a href="Zinc-carbon_battery" class="mw-redirect" title="Zinc-carbon battery">Zinc-carbon</a></td>

<td><a href="Manganese_dioxide" title="Manganese dioxide">Manganese dioxide</a></td>

<td><a href="Zinc_chloride" title="Zinc chloride">Zinc chloride</a></td>

<td>

</td></tr>

<tr>

<td><a href="Alkaline_battery" title="Alkaline battery">Alkaline</a></td>

<td><a href="Manganese_dioxide" title="Manganese dioxide">Manganese dioxide</a></td>

<td><a href="Alkali_metal_hydroxide" class="mw-redirect" title="Alkali metal hydroxide">Alkali</a></td>

<td>Much higher capacity than zinc-carbon.

</td></tr>

<tr>

<td><a href="Silver-oxide_battery" class="mw-redirect" title="Silver-oxide battery">Silver</a></td>

<td><a href="Silver_oxide" title="Silver oxide">Silver oxide</a></td>

<td>Alkali</td>

<td>SR synonymous to AG. Much flatter discharge curve than L. Slightly higher nominal capacity, much higher effective capacity for devices with higher cutoff voltage (eg. digital calipers).

</td></tr>

<tr>

<td><a href="Oxygen" title="Oxygen">Oxygen</a></td>

<td>Alkali</td>

<td>High capacity. Activated by removing seal from vent. Electrolyte can dry out.

</td></tr>

<tr>

<td><a href="Lithium_battery" title="Lithium battery">Lithium</a></td>

<td><a href="Manganese_dioxide" title="Manganese dioxide">Manganese dioxide</a></td>

<td>Organic</td>

<td>Lithium</td>

<td>Very common. Gradual loss of voltage with discharge.

</td></tr>

<tr>

<td><a href="Carbon_monofluoride" title="Carbon monofluoride">Carbon monofluoride</a></td>

<td>Organic</td>

<td>Lithium</td>

<td>Similar to C, with better performance and lower self-discharge at higher temperatures; lower initial voltage, flatter discharge curve.

</td></tr>

<tr>

<td><a href="Copper(II)_oxide" title="Copper(II) oxide">Copper oxide</a></td>

<td>Organic</td>

<td>Lithium</td>

<td>

</td></tr>

<tr>

<td><a href="Nickel_oxyhydroxide_battery" title="Nickel oxyhydroxide battery">Nickel oxyhydroxide</a></td>

<td>Manganese dioxide, nickel oxyhydroxide</td>

<td>Alkali</td>

<td>

</td></tr>

<tr>

<td>Thionyl chloride</td>

<td><a href="Thionyl_chloride" title="Thionyl chloride">Thionyl chloride</a></td>

<td>Organic</td>

<td>Lithium</td>

<td>

</td></tr>

<tr>

<td>Iron sulfide</td>

<td><a href="Iron_disulfide" class="mw-redirect" title="Iron disulfide">Iron disulfide</a></td>

<td>Organic</td>

<td>Lithium</td>

<td>Low temperature, high capacity

</td></tr>

<tr>

<td>M, N (withdrawn)</td>

<td><a href="Mercury_battery" title="Mercury battery">Mercury</a></td>

<td><a href="Mercuric_oxide" class="mw-redirect" title="Mercuric oxide">Mercuric oxide</a></td>

<td>Alkali</td>

<td>?

</td></tr></tbody></table>

<p>For types with stable voltage falling precipitously at end-of-life (cliff-top voltage-versus-time graph), the end-voltage is the value at the "cliff-edge", after which the voltage drops extremely rapidly. For types which lose voltage gradually (slope graph, no cliff-edge), the end-point is the voltage beyond which further discharge will cause damage to the battery and possibly the device it is powering, typically 1.0 or 0.9 V.

</p><p>Common names are conventional rather than uniquely descriptive; for example, a <i>silver (oxide) cell</i> has an alkaline electrolyte.

</p><p><i>L</i>, <i>S</i>, and <i>C</i> type cells are today the most commonly used types in <a href="Quartz_watch" class="mw-redirect" title="Quartz watch">quartz watches</a>, <a href="Calculator" title="Calculator">calculators</a>, small <a href="Personal_digital_assistant" title="Personal digital assistant">PDA</a> devices, computer clocks, and <a href="Blinky_(novelty)" class="mw-redirect" title="Blinky (novelty)">blinky lights</a>. Miniature <a href="Zinc-air_battery" class="mw-redirect" title="Zinc-air battery">zinc-air batteries</a> – <i>P</i> type – are used in <a href="Hearing_aid" title="Hearing aid">hearing aids</a> and medical instruments. In the IEC system, larger cells may have no prefix for the chemical system, indicating they are <a href="Zinc%E2%80%93carbon_battery" title="Zinc–carbon battery">zinc-carbon batteries</a>; such types are not available in button cell format.

</p><p>The second letter, <b>R</b>, indicates a round (cylindrical) form.

</p><p>The standard only describes primary batteries. Rechargeable types made in the same case size will carry a different prefix not given in the IEC standard, for example some <i>ML</i> and <i>LiR</i> button cells use rechargeable lithium technology.

</p><p>For rechargeables, the IEC prefixes are: <sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>

</p>

<ul><li>H - alloy-nickel oxide with aqueous electrolyte, 1.2V</li>

<li>K - cadmium-nickel oxide with aqueous electrolyte, 1.2V</li>

<li>PB - lead-lead dioxide with sulfuric acid electrolyte, 2V</li>

<li>IC - lithium-cobalt oxide with organic electrolyte, 3.8V</li>

<li>IN - lithium-nickel oxide with organic electrolyte, 3.8V</li>

<li>IM - lithium-manganese oxide with organic electrolyte, 3.8V</li></ul>

<th>Prefix

</th>

<th>Rechargeable

</th>

<th>Chemistry

</th>

<th>Nominal voltage (V)

</th>

<th>Comments

</th></tr>

<tr>

<td>sometimes called "rechargeable CR"; higher voltage than CR can cause damage when used as direct replacement, may be lowered with a serial diode or regulator

</td></tr>

<tr>

<td>LiMnO2</td>

<td>"manganese"; -20..+60 °C, 2.8..3.2V charging; common for long-term memory/<a href="Realtime_clock" class="mw-redirect" title="Realtime clock">RTC</a> backups; plateaus at 2.5V

</td></tr>

<tr>

<td>LiMnSi</td>

<td>"manganese silicon"; -20..+60 °C, 2.8..3.3V charging; better charge/discharge characteristics than VL or ML; common for memory/RTC backups

</td></tr>

<tr>

<td>"vanadium", eg, VL1220, VL2020, VL2330, VL3032; -20..+60 °C, 3.25..3.55V charging; lower voltage drop on load

</td></tr>

<tr>

<td>CoTiLi</td>

<td>"cobalt titanium"; -20..+60 °C, 2.5..2.7V charging; common in solar watches, sometimes called "watch capacitor"

</td></tr>

<tr>

<td>LiMnTi</td>

<td>"manganese titanium"; -10..+60 °C, 1.8..2.6V charging

</td></tr>

<tr>

<td>can replace LR/SR cells if lower voltage than 1.5V is not a problem

</td></tr>

<tr>

<td>LiSoCl2</td>

<td>"thionyl chloride"; for low temperatures

</td></tr></tbody></table>

<div class="mw-heading mw-heading3"><h3 id="Package_size">Package size</h3></div>

<p>The package size of button batteries can be indicated by a 2-digit code representing a standard case size, or a 3- or 4-digit code representing the cell diameter and height, where 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 <i>9</i> is 9.5 mm in diameter, since no other value between 9.0 and 9.9 is used. The last two digits are the overall height in tenths of a millimeter.

</p>

<caption>Diameter code (first 1 or 2 digits)

</caption>

<th>Number <br>code

</th>

<th>Nominal <br>diameter (mm)

</th>

<th>Tolerance (mm)

</th></tr>

<tr>

<td>±0.15

</td></tr>

<tr>

<td>±0.15

</td></tr>

<tr>

<td>±0.15

</td></tr>

<tr>

<td>±0.15

</td></tr>

<tr>

<td>±0.15

</td></tr>

<tr>

<td>±0.20

</td></tr>

<tr>

<td>±0.20

</td></tr>

<tr>

<td>±0.25

</td></tr>

<tr>

<td>±0.25

</td></tr>

<tr>

<td>±0.25

</td></tr>

<tr>

<td>±0.50

</td></tr>

<tr>

<td>±0.50

</td></tr>

<tr>

<td>±0.20

</td></tr></tbody></table>

<p>Examples:

</p>

<ul><li>CR2032: lithium, 20 mm diameter, 3.2 mm height, 220 mAh</li>

<li>CR2032H; lithium, 20 mm diameter, 3.2 mm height 240 mAh</li>

<li>CR2025: lithium, 20 mm diameter, 2.5 mm height, 170 mAh</li>

<li>SR516: silver, 5.8 mm diameter, 1.6 mm height</li>

<li>LR1154/SR1154: alkaline/silver, 11.6 mm diameter, 5.4 mm height. The two-digit codes LR44/SR44 are often used for this size</li></ul>

<p>Some coin cells, particularly lithium, are made with solder tabs for permanent installation, such as to power memory for configuration information of a device. The complete nomenclature will have prefixes and suffixes to indicate special terminal arrangements. For example, there is a plug-in and a solder-in CR2032, a plug-in and three solder-in BR2330s in addition to CR2330s, and many rechargeables in 2032, 2330, and other sizes.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading3"><h3 id="Letter_suffix">Letter suffix</h3></div>

<p>After the package code, the following additional letters may optionally appear in the type designation to indicate the electrolyte used:

</p>

<ul><li>P: <a href="Potassium_hydroxide" title="Potassium hydroxide">potassium hydroxide</a> electrolyte</li>

<li>S: <a href="Sodium_hydroxide" title="Sodium hydroxide">sodium hydroxide</a> electrolyte</li>

<li>No letter: organic electrolyte</li>

<li>SW: low drain type for quartz watches (analog or digital) without light, alarm, or chronograph functions</li>

<li>W: high drain type for all quartz watches, calculators and cameras. The battery complies with all the requirements of the international IEC 60086-3<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> standard for watch batteries.</li></ul>

<div class="mw-heading mw-heading3"><h3 id="Other_package_markings">Other package markings</h3></div>

<p>Apart from the type code described in the preceding section, watch batteries should also be marked with

</p>

<ul><li>the name or trademark of the manufacturer or supplier;</li>

<li>the polarity (+);</li>

<li>the date of manufacturing.</li></ul>

<div class="mw-heading mw-heading4"><h4 id="Date_codes">Date codes</h4></div>

<p>Often a 2-letter code (sometimes on the side of the battery) where the first letter identifies the manufacturer and the second is the year of manufacture. For example:

</p>

<ul><li>YN – the letter N is the 14th letter in the alphabet – indicates the cell was manufactured in 2014.</li></ul>

<p>There is no universal standard.

</p><p>The manufacturing date can be abbreviated to the last digit of the year, followed by a digit or letter indicating the month, where O, Y, and Z are used for October, November and December, respectively (e.g., 01 = January 2010 or 2000, 9Y = November 2019 or 2009).

</p>

<div class="mw-heading mw-heading3"><h3 id="Common_manufacturer_code">Common manufacturer code</h3></div>

<p>A code used by some manufacturers is <i>AG</i> (alkaline) or <i>SG</i> (silver) followed by a number, as follows

</p>

<th>IEC code

</th></tr>

<tr>

<td>521

</td></tr>

<tr>

<td>621

</td></tr>

<tr>

<td>726

</td></tr>

<tr>

<td>736

</td></tr>

<tr>

<td>626

</td></tr>

<tr>

<td>754

</td></tr>

<tr>

<td>920 or 921

</td></tr>

<tr>

<td>926 or 927

</td></tr>

<tr>

<td>1120 or 1121

</td></tr>

<tr>

<td>936

</td></tr>

<tr>

<td>1130 or 1131

</td></tr>

<tr>

<td>721

</td></tr>

<tr>

<td>1142

</td></tr>

<tr>

<td>1154

</td></tr></tbody></table>

<p>To those familiar with the <a href="Ag_(element)" class="mw-redirect" title="Ag (element)">chemical symbol for silver, Ag</a>, this may suggest incorrectly that AG cells are silver.

</p>

<div class="mw-heading mw-heading2"><h2 id="Rechargeable_variants">Rechargeable variants</h2></div>

<p>In addition to disposable (single use) button cells, <a href="Rechargeable_battery" title="Rechargeable battery">rechargeable batteries</a> in many of the same sizes are available, with lower capacity than disposable cells. Disposable and rechargeable batteries are manufactured to fit into a holder or with solder tags for permanent connection. In equipment with a battery holder, disposable or rechargeable batteries may be used, if the voltage is compatible.

</p><p>A typical use for a small rechargeable battery (in coin or other format) is to back up the settings of equipment which is normally permanently mains-powered, in the case of power failure. For example, many central heating controllers store operation times and similar information in <a href="Volatile_memory" title="Volatile memory">volatile memory</a>, lost in the case of power failure. It is usual for such systems to include a backup battery, either a disposable in a holder (current drain is extremely low and life is long) or a soldered-in rechargeable.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>

</p><p>Rechargeable <a href="Nickel-cadmium_battery" class="mw-redirect" title="Nickel-cadmium battery">NiCd</a> button cells were often components of the backup battery of older computers; non-rechargeable lithium button cells with a lifetime of several years are used in later equipment.

</p>

<div role="note" class="hatnote navigation-not-searchable">See also: <a href="Lithium_battery#Chemistries" title="Lithium battery">Lithium battery § Chemistries</a>, and <a href="Lithium-ion_battery#Shapes" title="Lithium-ion battery">Lithium-ion battery § Shapes</a></div>

<p>Rechargeable batteries typically have the same dimension-based numeric code with different letters; thus CR2032 is a disposable battery while ML2032, VL2032 and LIR2032 are rechargeables that fit in the same holder if not fitted with solder tags. It is mechanically possible, though hazardous, to fit a disposable battery in a holder intended for a rechargeable; holders are fitted in parts of equipment only accessible by service personnel in such cases.

</p>

<div class="mw-heading mw-heading2"><h2 id="Health_issues">Health issues</h2></div>

<div class="mw-heading mw-heading3"><h3 id="Accidental_ingestion">Accidental ingestion</h3></div>

<p>Button cells are attractive to small children; they may put them in their mouth and swallow them. The ingested battery can cause significant damage to internal organs. The battery reacts with bodily fluids, such as mucus or saliva, creating a circuit which can release an alkali that is strong enough to burn through human tissue.<sup id="cite_ref-GOSH_12-0" class="reference"><a href="#cite_note-GOSH-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-SN_13-0" class="reference"><a href="#cite_note-SN-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup>

</p><p>Swallowed batteries can cause damage to the lining of the <a href="Esophagus" title="Esophagus">esophagus</a>, and can create a hole in the esophagus lining in two hours.<sup id="cite_ref-GOSH_12-1" class="reference"><a href="#cite_note-GOSH-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> In severe cases, damage can cause a passage between the esophagus and the <a href="Trachea" title="Trachea">trachea</a>. Swallowed button cells can damage the vocal cords. They can even burn through the blood vessels in the chest area, including the <a href="Aorta" title="Aorta">aorta</a>.<sup id="cite_ref-GOSH_12-2" class="reference"><a href="#cite_note-GOSH-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> In the United States, 44 child deaths were reported from button battery ingestion in 2002–2021.<sup id="cite_ref-SN_13-1" class="reference"><a href="#cite_note-SN-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Ingestions are treated initially with honey or <a href="Sucralfate" title="Sucralfate">sucralfate</a> as a temporizing measure, with <a href="Endoscopy" title="Endoscopy">endoscopic removal</a> as definitive treatment.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup>

</p><p>In <a href="Greater_Manchester" title="Greater Manchester">Greater Manchester</a>, England, with a population of 2,700,000, two children between 12 months and six years old died, and five suffered life-changing injuries, in the 18 months leading up to October 2014. In the United States, on average, over 3,000 pediatric ingestions of button batteries are reported annually. The proportion of major and fatal outcomes is increasing.<sup id="cite_ref-:0_15-0" class="reference"><a href="#cite_note-:0-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> Coin cells of diameter 20 mm or greater cause the most serious injuries, even if expended and intact.<sup id="cite_ref-:0_15-1" class="reference"><a href="#cite_note-:0-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:1_16-0" class="reference"><a href="#cite_note-:1-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> In Auckland, New Zealand as of 2018 there are about 20 cases per year requiring hospitalization.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup>

</p><p>In 2020, <a href="Duracell" title="Duracell">Duracell</a> announced that they were coating some of their lithium button cells with a <a href="Bitterant" title="Bitterant">bitterant</a> compound to discourage children from ingesting them.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> An alternative solution is to <a href="Design" title="Design">design</a> (or <a href="Litigate" class="mw-redirect" title="Litigate">litigate</a>) the offending cells, mostly 20mm <a href="Lithium" title="Lithium">lithium</a> cells, out of the supply chain.<sup id="cite_ref-BBs_19-0" class="reference"><a href="#cite_note-BBs-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup>

</p><p>Children most at risk of button battery ingestion are those aged 5 years and under.<sup id="cite_ref-BBs_19-1" class="reference"><a href="#cite_note-BBs-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> Three child deaths in Australia reveal that in each case: i) the ingestion was not witnessed, ii) the source of the battery remains unknown, iii) initial <a href="Misdiagnosis" class="mw-redirect" title="Misdiagnosis">misdiagnosis</a> delayed appropriate intervention, iv) diagnosis was confirmed by X-ray, v) in each case the battery lodged in the child's oesophagus, vi) the offending batteries were 20mm lithium cells, vii) death occurred 19 days to 3 weeks after ingestion.<sup id="cite_ref-BBs_19-2" class="reference"><a href="#cite_note-BBs-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> The presenting symptoms of button cell ingestion may be misdiagnosed and attributed to common non life-threatening childhood maladies.

</p>

<div class="mw-heading mw-heading3"><h3 id="Mercury_and_cadmium">Mercury and cadmium</h3></div>

<p>Some button cells contain <a href="Mercury_(element)" title="Mercury (element)">mercury</a> or <a href="Cadmium" title="Cadmium">cadmium</a>, which are toxic. In early 2013 the <a href="European_Parliament_Committee_on_the_Environment%2C_Public_Health_and_Food_Safety" title="European Parliament Committee on the Environment, Public Health and Food Safety">European Parliament Environment Committee</a> voted for a ban on the export and import of a range of mercury-containing products such as button cells and other batteries, to be imposed from 2020.<sup id="cite_ref-EU_Dir._Summary_20-0" class="reference"><a href="#cite_note-EU_Dir._Summary-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup>

</p>

<ul><li><a href="List_of_battery_sizes" title="List of battery sizes">List of battery sizes</a></li>

<li><a href="List_of_battery_types" title="List of battery types">List of battery types</a></li>

<li><a href="Battery_recycling" title="Battery recycling">Battery recycling</a></li>

<li><a href="Artificial_cardiac_pacemaker" class="mw-redirect" title="Artificial cardiac pacemaker">Artificial cardiac pacemaker</a></li>

<li><a href="Implantable_cardioverter-defibrillator" title="Implantable cardioverter-defibrillator">Implantable cardioverter-defibrillator</a></li></ul>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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</style><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.bbc.co.uk/news/health-37435364">"See what a button battery can do to a child's throat"</a>. <i><a href="BBC_News_Online" title="BBC News Online">BBC News Online</a></i>. 22 September 2016. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160922220446/http://www.bbc.co.uk/news/health-37435364">Archived</a> from the original on 22 September 2016.</cite></span>

</li>

<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.pcmag.com/news/duracell-is-making-coin-batteries-taste-horrible-on-purpose">"Duracell Is Making Coin Batteries Taste Horrible on Purpose"</a>. <i><a href="PCMag" title="PCMag">PCMag</a></i>. 30 September 2020<span class="reference-accessdate">. Retrieved <span class="nowrap">2022-02-17</span></span>.</cite></span>

</li>

<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.amazon.co.uk/Hyundai-791-522-Alkaline-button/dp/B000N209OM">Alkaline button cell</a>. amazon.co.uk. A card marked with the name Hyundai with 30 button cells in 5 sizes made in China, stating that they are alkaline but with pictures of watches, calculators, etc. is sold for prices ranging from about £1 to £4 in the UK</span>

</li>

<li id="cite_note-energizer2-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-energizer2_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-energizer2_4-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://data.energizer.com/">Energizer website</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090828093736/http://data.energizer.com/">Archived</a> 2009-08-28 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, with datasheets for many batteries of several chemistries</span>

</li>

<li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.truetex.com/buttons.htm">Buying Button Cells for Digital Calipers</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100727054346/http://www.truetex.com/buttons.htm">Archived</a> 2010-07-27 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Truetex.com. Retrieved on 2015-11-08.</span>

</li>

<li id="cite_note-battery-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-battery_6-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.davehylands.com/Machinist/Caliper-Batteries/">Caliper Battery Life</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100621072728/http://www.davehylands.com/Machinist/Caliper-Batteries/">Archived</a> 2010-06-21 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Davehylands.com. Retrieved on 2015-11-08.</span>

</li>

<li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text">Battery Standards and Sizes. (2005). Batteries for Portable Devices, 29–32. doi:10.1016/b978-044451672-5/50003-x </span>

</li>

<li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.panasonic.com/industrial/batteries-oem/oem/primary-coin-cylindrical/br-cr.aspx">Panasonic CR battery data page</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130702222839/http://www.panasonic.com/industrial/batteries-oem/oem/primary-coin-cylindrical/br-cr.aspx">Archived</a> 2013-07-02 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, showing many batteries in plug-in and horizontal and vertical solder versions. The same site lists rechargeable cells with various chemistries, in the same sizes and options as disposable batteries of the same size code and hence mechanically interchangeable, though carrying risks of malfunctioning and damage.</span>

</li>

<li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://webstore.iec.ch/p-preview/info_iec60086-3%7Bed2.0%7Den_d.pdf">IEC 60086-3 Standard for Watch Batteries (withdrawn)</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130627045835/http://webstore.iec.ch/p-preview/info_iec60086-3%7Bed2.0%7Den_d.pdf">Archived</a> 2013-06-27 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. (PDF) . Just scope/preview. Retrieved on 2015-11-08.</span>

</li>

<li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.kiddefirex.co.uk/utcfs/ws-5250/Assets/Datasheet%20KF3.pdf">Datasheet of a mains-powered smoke alarm, with models backed up by disposable battery or by rechargeable UL2330 button battery</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130805050433/http://www.kiddefirex.co.uk/utcfs/ws-5250/Assets/Datasheet%20KF3.pdf">Archived</a> 2013-08-05 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. Kiddefirex.co.uk (2015-10-01). Retrieved on 2015-11-08.</span>

</li>

<li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><cite class="citation book cs1">"Clause 9: Marking and packaging". <a rel="nofollow" class="external text" href="https://webstore.iec.ch/preview/info_iec60086-4%7Bed5.0.RLV%7Den.pdf"><i></i>IEC 60086-4:2019<i> Primary batteries - Part 4: Safety of lithium batteries</i></a> <span class="cs1-format">(PDF)</span>. Geneva: IEC. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-2-8322-6808-7</bdi>.</cite></span>

</li>

<li id="cite_note-GOSH-12"><span class="mw-cite-backlink">^ <a href="#cite_ref-GOSH_12-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-GOSH_12-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-GOSH_12-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.gosh.nhs.uk/conditions-and-treatments/conditions-we-treat/button-batteries-using-them-safely">"Button batteries – using them safely"</a>. <i>Great Ormond Street Hospital</i>. Great Ormond Street Hospital for Children. October 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-10-19</span></span>.</cite></span>

</li>

<li id="cite_note-SN-13"><span class="mw-cite-backlink">^ <a href="#cite_ref-SN_13-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-SN_13-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Paull, John (2022) <a rel="nofollow" class="external text" href="http://www.academia.edu/84055214/Silent_Nursery_Button_Battery_Fatalities_in_Children_the_Long_Road_from_Externality_to_Obsolescence">Silent Nursery: Button Battery Fatalities in Children – the Long Road from Externality to Obsolescence</a>, International Journal of Clinical and Experimental Medicine Research, 6 (3): 301–308.</span>

</li>

<li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><cite id="CITEREFSchmidtMuenstererWendling-Keim2023" class="citation journal cs1">Schmidt, Yannick; Muensterer, Oliver; Wendling-Keim, Danielle (28 September 2023). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10569471">"The use of honey in button battery ingestions: a systematic review"</a>. <i>Frontiers in Pediatrics</i>. <b>11</b>. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.3389%2Ffped.2023.1259780">10.3389/fped.2023.1259780</a></span>. <a href="PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10569471">10569471</a></span>.</cite></span>

</li>

<li id="cite_note-:0-15"><span class="mw-cite-backlink">^ <a href="#cite_ref-:0_15-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:0_15-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.poison.org/battery/stats">"Button Battery Statistics"</a>. <i>www.poison.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2018-06-30</span></span>.</cite></span>

</li>

<li id="cite_note-:1-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-:1_16-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFLitovitzWhitakerClarkWhite2010" class="citation journal cs1">Litovitz, Toby; Whitaker, Nicole; Clark, Lynn; White, Nicole C.; Marsolek, Melinda (2010-06-01). <span class="id-lock-subscription" title="Paid subscription required"><a rel="nofollow" class="external text" href="http://pediatrics.aappublications.org/content/125/6/1168">"Emerging Battery-Ingestion Hazard: Clinical Implications"</a></span>. <i>Pediatrics</i>. <b>125</b> (6): <span class="nowrap">1168–</span>1177. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1542%2Fpeds.2009-3037">10.1542/peds.2009-3037</a>. <a href="ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0031-4005">0031-4005</a>. <a href="PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/20498173">20498173</a>.</cite></span>

</li>

<li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.stuff.co.nz/life-style/parenting/101091235/risk-of-swallowing-deadly-button-batteries-prompts-new-industry-safety-policy">"Risk of swallowing deadly button batteries prompts new industry safety policy"</a>. <i>Stuff</i>. February 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">2018-04-07</span></span>.</cite></span>

</li>

<li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><cite id="CITEREFGartenberg2020" class="citation web cs1">Gartenberg, Chaim (2020-09-29). <a rel="nofollow" class="external text" href="https://www.theverge.com/2020/9/29/21493443/duracell-new-coin-batteries-bitter-coating-taste-terrible-child-protection">"Duracell's new coin batteries have a bitter coating that makes them taste terrible"</a>. <i>The Verge</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2020-09-29</span></span>.</cite></span>

</li>

<li id="cite_note-BBs-19"><span class="mw-cite-backlink">^ <a href="#cite_ref-BBs_19-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-BBs_19-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-BBs_19-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text">Paull, John (2021). <a rel="nofollow" class="external text" href="http://www.academia.edu/49259463/Button_Batteries_and_Child_Deaths_Market_Failure_of_Unsafe_Products">Button batteries and child deaths: Market failure of unsafe products</a>, International Journal of Clinical and Experimental Medicine Research, 2021, 5(3), 297–303</span>

</li>

<li id="cite_note-EU_Dir._Summary-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-EU_Dir._Summary_20-0">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://data.energizer.com/PDFs/eubattdirectivesummary.pdf">"EUBatteryDirective (2006/66/EC) Summary"</a> <span class="cs1-format">(PDF)</span>. <i>8 December 2009</i>. Eveready Battery Company, Inc. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120710210826/http://data.energizer.com/PDFs/eubattdirectivesummary.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 10 July 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">20 June</span> 2013</span>.</cite>148 Kb</span>

</li>

<li id="cite_note-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-21">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX:32013L0056">"Directive 2013/56/EU amending Directive 2006/66/EC"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160304235055/http://eur-lex.europa.eu/legal-content/EN/ALL/?uri=CELEX%3A32013L0056">Archived</a> 2016-03-04 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, European Parliament & Council, 20 November 2013, Retrieved 7 April 2015</span>

</li>

</ol></div>

<div class="mw-heading mw-heading2"><h2 id="Sources">Sources</h2></div>

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<ul><li>IEC 60086-3: Primary batteries – Part 3: Watch batteries. <a href="International_Electrotechnical_Commission" title="International Electrotechnical Commission">International Electrotechnical Commission</a>, Geneva, 1995. (also: BS EN 60086-3:1996)</li>

<li>Example of a data sheet available from <a href="Energizer" title="Energizer">Energizer</a>: <cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20241006204912/http://data.energizer.com/pdfs/cr2032.pdf">"Product datasheet: Energizer CR2032"</a> <span class="cs1-format">(PDF)</span>. <i>energizer.com</i>. Archived from <a rel="nofollow" class="external text" href="http://data.energizer.com/pdfs/cr2032.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 6 October 2024 – via Internet Archive.</cite></li>

<li><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.sustainableproduction.org/downloads/MaineDEPButtonBatteryReportFinal12-17-04.pdf">"An Investigation of Alternatives to Miniature Batteries Containing Mercury"</a> <span class="cs1-format">(PDF)</span>.</cite></li></ul>

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<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

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<div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Button_cells" class="extiw external" title="commons:Category:Button cells">Button cells</a></span>.</div></div>

</div>

<ul><li><a rel="nofollow" class="external text" href="http://www.zbattery.com/Coin-Cell-Reference.html">Coin cell reference table</a></li>

<li><a rel="nofollow" class="external text" href="http://www.watchbattery.co.uk/Watch_Battery_Cross_Reference_Table.php">Watch battery cross reference table</a></li>

<li><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20131102015107/http://image.sciencenet.cn/olddata/kexue.com.cn/bbs/upload/15791IEC60086-2_%7B10%5b1%5d%5b1%5d.1%7D(2001-10).pdf">"IEC 60086-2 Primary batteries – Part 2: Physical and electrical specifications"</a> <span class="cs1-format">(PDF)</span>. Archived from <a rel="nofollow" class="external text" href="http://image.sciencenet.cn/olddata/kexue.com.cn/bbs/upload/15791IEC60086-2_%7B10%5b1%5d%5b1%5d.1%7D(2001-10).pdf">the original</a> <span class="cs1-format">(PDF)</span> on 2013-11-02.</cite> (includes discharge characteristics)</li>

<li><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2006:266:0001:0014:en:PDF">"DIRECTIVE 2006/66/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL"</a>.</cite> <span style="font-size: 85%;">(407 Kb)</span> 6 September 2006 (re recycling and disposal of batteries)</li></ul>

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</style><div id="Battery_sizes105" style="font-size:114%;margin:0 4em"><a href="List_of_battery_sizes" title="List of battery sizes">Battery sizes</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Electrochemical_cell" title="Electrochemical cell">Single-cell</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Battery_pack" title="Battery pack">Multiple-cell</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<li><a href="Lantern_battery" title="Lantern battery">Lantern</a></li>

</div></td></tr></tbody></table></div>

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This article is issued from <a class="external text" title="Last edited on 2025-08-02" href="https://en.wikipedia.org/wiki/?title=Button_cell&oldid=1303825992">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.

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