List of battery sizes

4.5-Volt, D, C, AA, AAA, AAAA, A23, 9-Volt, CR2032 and LR44 batteries.

This article lists the sizes and shapes of some common primary and secondary battery types in household and light industrial use.

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 reached. Technical standards for battery sizes and types are published by standards organizations such as International Electrotechnical Commission (IEC) and American National Standards Institute (ANSI). 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.

The complete nomenclature for the battery will fully specify the size, chemistry, terminal arrangements and special characteristics of a battery. The same physically interchangeable cell size or battery size may have widely different characteristics; physical interchangeability is not the sole factor in substitution of batteries.

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.

Standardization

Main article: Battery nomenclature

The current IEC standards for portable primary (non-rechargeable) batteries bear the 60086 number. The relevant US standards are the ANSI C18 series. These standards are developed by a committee of the National Electrical Manufacturers Association (NEMA).

Both standards have several parts covering general principles, physical specifications and safety. Designations by IEC and ANSI standards do not entirely agree, although harmonization is in progress. Manufacturers further have their own systematic identification of cell types, so cross-reference tables are useful to identify equivalent types from different manufacturers. ^[1]

Battery chemistry

The terminal voltage of a battery depends on the chemicals and materials used in its construction, and not on its physical size. For example, primary (non-rechargeable) alkaline batteries have a nominal voltage of 1.5 volts. Rechargeable NiCd (nickel cadmium) and NiMH (nickel metal hydride) typically output 1.25 volts per cell. Devices intended for use with primary batteries may not operate properly with these cells, given the reduction in voltage. Mercury batteries, no longer common, had stable terminal voltages around 1.35 volts.

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 cell). For example, a CR123 battery is always LiMnO₂ ('lithium') chemistry, in addition to its unique size.

The following tables give the common battery chemistries for the current common sizes of batteries. See Battery Chemistries for a list of other electrochemical systems.

Non-standard brand-specific names

Manufacturers may assign proprietary names and numbers to their batteries, disregarding common, colloquial, IEC, and ANSI naming conventions (see LR44 battery as an example). Often this is done to steer customers towards a specific brand, and away from competing or generic brands, by obfuscating the common name. For example, if a remote control needs a new battery and the battery compartment has the label, "Replace with CX472 type battery," many customers will buy that specific brand, not realizing that this is simply a brand name for a common type of battery. For example, British standard U series were often sold under manufacturer prefixes such as "C" "SP" "HP" etc.; Ever Ready sold "U2" (D) batteries as "SP2" (standard-duty zinc carbon) and "HP2" (heavy duty zinc chloride).

On the other hand, with obscure battery types, the name of a specific brand will sometimes become the most common name for that battery type, as other manufacturers copy or modify the name so that customers recognize it.

Common consumer batteries

Round batteries

These are all single-cell round batteries with height greater than their diameter. In zinc-carbon or alkaline types they produce around 1.5 volts per cell when fresh. Other types produce other voltages per cell (as low as 1.2 volts for rechargeable nickel-cadmium, up to around 3 volts for lithium/manganese dioxide). The cylindrical form has a positive nub terminal at the cap of the cell, and the negative terminal at the bottom of the can; the side of the can is not used as a terminal.

Most Common Name / Image	Other Common Names	IEC Name	ANSI/NEDA Name	Typical Capacity (mAh)	Dimensions [mm] Diameter x Height	Comments
AAA	U16 (In Britain until the 1980s) Micro Microlight MN2400 MX2400 Type 286 (Soviet Union/Russia) UM 4 (JIS)[2] #7 (China) 6135-99-117-3143 (NSN)[3]	LR03 (alkaline) R03 (carbon–zinc) FR03 (Li–FeS2) HR03 (NiMH) KR03 (NiCd) ZR03 (NiOOH)	24A (alkaline) 24D (carbon–zinc) 24LF (Li–FeS2)	1200 (alkaline) 540 (carbon–zinc) 800–1000 (NiMH)	10.5 x 44.5	Introduced 1911, but added to ANSI standard in 1959
AA	U7 (In Britain until the 1980s) Pencil-sized Penlight Mignon MN1500 MX1500 Type 316 (Soviet Union/Russia) UM 3 (JIS) #5 (China) 6135-99-052-0009 (NSN)(carbon-zinc) 6135-99-195-6708 (NSN)(alkaline)[3]	LR6 (alkaline) R6 (carbon–zinc) FR6 (Li–FeS2) HR6 (NiMH) KR6 (NiCd) ZR6 (NiOOH)	15A (alkaline) 15D (carbon–zinc) 15LF (Li–FeS2) 1.2H2 (NiMH) 1.2K2 (NiCd)	2700 (alkaline) 1100 (carbon–zinc) 3000 (Li–FeS2) 1700–2900 (NiMH) 600–1000 (NiCd)	14.5 x 50.5	Introduced 1907, but added to ANSI standard sizes in 1947
C	U11 (In Britain until the 1980s) MN1400 MX1400 Baby Type 343 (Soviet Union/Russia) BA-42 (US Military Spec WWII–1980s)[citation needed] UM 2 (JIS) #2 (China) 6135-99-199-4779 (NSN)(carbon-zinc) 6135-99-117-3212 (NSN)(alkaline)[3]	LR14 (alkaline) R14 (carbon–zinc) FR14 (Li-FeS2) HR14 (NiMH) KR14 (NiCd) ZR14 (NiOOH)	14A (alkaline) 14D (carbon–zinc)	8000 (alkaline) 3800 (carbon–zinc) 4500–6000 (NiMH)	26.2 x 50	Can be replaced with alkaline AA cell using plastic sabot (stub case)
D	U2 (In Britain until the 1980s) Flashlight Battery MN1300 MX1300 Mono Type 373 (Soviet Union/Russia) BA-30 (US Military Spec WWII–1980s) UM 1 (JIS) #1 (China) 6135-99-464-1938 (NSN)(carbon-zinc) 6135-99-109-9428 (NSN)(alkaline)[3]	LR20 (alkaline) R20 (carbon–zinc) FR20 (Li-FeS2) HR20 (NiMH) KR20 (Ni-Cd) ZR20 (NiOOH)	13A (alkaline) 13D (carbon–zinc)	12000 (alkaline) 8000 (carbon–zinc) 2200–12000 (NiMH)	34.2 x 61.5	Introduced 1898 as the first flashlight battery.

Non-round batteries

Most Common Name / Image	Other Common Names	IEC Name	ANSI/NEDA Name	Typical Capacity (mAh)	Nominal Voltage	Terminal layout	Dimen- sions [mm]	Comments
4.5-Volt	Pocketable Battery 1203 4.5 V Type 3336 (Soviet  Union/Russia) 6135-99-738-4038 (NSN)[3]	3LR12 (alkaline) 3R12 (carbon‑zinc)	MN1203 (manganese)	6100 (alkaline) 1200 (carbon‑zinc)	Alkaline Carbon‑Zinc: 4.5 V (3 cells)	Two 6...7 mm wide metal strips (+) Shorter strip (−) Longer strip	H: 67 L: 62 W: 22	This battery is most common in Europe and Russia. In Switzerland as of 2008, 4.5-volt lantern batteries accounted for 1% of primary battery sales.[4]
9-Volt	PP3 Radio battery Smoke Alarm (UK) MN1604 Square battery Krona (Soviet  Union/Russia) Transistor 6135-99-634-8080 (NSN)[3]	6LR61 (alkaline) 6F22 (carbon‑zinc) 6KR61 (NiCd) 6HR61 (NiMH)	1604A (alkaline) 1604D (carbon‑zinc) 1604LC (lithium) 7.2H5 (NiMH) 11604 (NiCd) 1604M (mercury,  obsolete)[5]	565 (alkaline) 400 (carbon‑zinc) 1200 (lithium) 175–300 (NiMH) 120 (NiCd) 500 (lithium polymer  rechargeable) 580 (mercury,  obsolete)	Alkaline Carbon‑Zinc: 9 V (6 cells) Lithium: 9 V (3 cells) NiMH / NiCd: 7.2, 8,4 or 9.6 V (6, 7 or 8 cells) [6]	Both on same end (+) male clasp (−) female clasp	H: 48.5 L: 26.5 W: 17.5	Added to ANSI standard in 1959
Lantern (Spring)	Lantern 6 Volt Spring Top MN908 (UK) 996 or PJ996 Energizer 529 6135-99-910-1145 (NSN)[3]	4LR25Y (alkaline) 4R25 (carbon‑zinc)	908A (alkaline) 908D (carbon‑zinc)	26000 (alkaline) 10500 (carbon‑zinc)	Alkaline Carbon‑Zinc: 6 V (4 cells)	Springs Top (+) Corner spring (−) Centre string	H: 115 L: 68.2 W: 68.2	Spring terminals.

Less common batteries

These types are not as likely to be found in consumer applications and may be specialized for photographic, instrumentation or other purposes. Some cell sizes are used only as elements of multi-cell batteries.

Round single-cell

These are all single-cell round batteries with a height greater than their diameter. In carbon-zinc or alkaline types they produce around 1.5 volts per cell when fresh. Other types produce other voltages per cell (as low as 1.2 volts for rechargeable nickel-cadmium, up to around 3 volts for lithium/manganese dioxide). The cylindrical form has a positive nub terminal at the cap of the cell, and the negative terminal at the bottom of the can; the side of the can is not used as a terminal when these cells are sold as individual units for consumer use.

Image	Most Common Name	Other Common Names	IEC Name	ANSI/NEDA Name	Typical Capacity (mAh)	Dimensions Diameter x Height (mm)	Comments
	1/2AA	SAFT LS14250 Tadiran TL5101 UL142502P	CR14250 (Li‑MnO2) 3V ER14250 (Li‑SOCl2) 3.6V		850–1200	14.5 × 24	Same diameter as AA battery, used in small electronics, including pulse oximeters, as well as use in some computer models (such as the Power Mac G4 and some older IBM PC compatibles) as the CMOS battery
	AAAA	MX2500 Mini UM 6 (JIS)	LR8D425 (alkaline)	25A (alkaline)	625 (alkaline)	8.3 x 42.5	Sometimes used in 'pen flashlights', calculators, fishing lures, or electronic glucose meters.
	A		R23 (carbon‑zinc) LR23 (alkaline)			17 x 50	More common as a NiCd or NiMH cell size than a primary size, popular in older laptop batteries and hobby battery packs. Various fractional sizes are also available e.g. 4/5 A.
	B	U10 (UK, pre‑1980s) 336 (Russia)	R12 (carbon‑zinc) LR12 (alkaline)		8350 (alkaline)	21.5 x 60	Most commonly found within a European 4.5 volt lantern battery. Not to be confused with the vacuum tube B battery.
	F		R25 (carbon‑zinc) LR25 (alkaline)	60	10500 (carbon‑zinc) 26000 (alkaline)	33 x 91	Four "F" Cells are often found within 6 volt rectangular lantern batteries.
	N	Lady MN9100 UM-5 (JIS) E90 6135-99-661-4958 (NSN)[3]	LR1 (alkaline) R1 (carbon‑zinc) HR1 (NiMH) KR1 (NiCd)	910A (alkaline) 910D (carbon‑zinc)	800–1000 (alkaline) 400 (carbon‑zinc) 350–500 (NiMH)	12 x 30.2	Rechargeable nickel-cadmium and nickel-metal hydride are far less common than other rechargeable sizes.[7] Mercury batteries of the same dimensions are no longer manufactured.
	No. 6	Ignition Cell, 6135-99-114-3446 (NSN)[3]	R40	905	35000–40000  (carbon‑zinc)	67 x 172	Typical modern uses include school science experiments, and starting glow plug model engines. Formerly used for alarms, bell ringing, ignition systems, telephones.[1] Terminals are screw posts with a maximum diameter of 4.2 mm. + centre, - edge.
	Sub-C	Type 323 (Soviet  Union/Russia)	KR22C429 (NiCd) HR22C429 (NiMH)		1200–2400 (NiCd) 1800–5000 (NiMH)	22.2 × 42.9	A common size for cordless tool battery packs. This size is also used in radio-controlled scale vehicle battery packs. 1/2-, 4/5- and 5/4-sub-C sizes (differing in length) are also available.

Round multiple cell

Image	Most Common Name	Other Common Names	IEC Name	ANSI/NEDA Name	Typical Capacity (mAh)	Nominal Voltage (V)	Dimensions Diameter x Height (mm)	Comments
	A23	V23GA 23A 23AE MN21 L1028 8LR23	8LR932 (alkaline)	1181A (alkaline)	55 (alkaline)	12	10.3 x 28.5	Used in small RF devices such as key fob-style garage door openers and keyless entry systems where only infrequent pulse current is used. Often enclosed like a normal battery but sometimes simply a stack of eight LR932 button cells shrink wrapped together.
	A27	GP27A MN27 L828 27A			22 (alkaline)	12	8 x 28	Used in small RF devices such as car alarm remote controls. Can also be found in some cigarette lighters.
	Duplex	Ever Ready No. 8	2R10			3	21.8 × 74.6	Internally contains two 1.5 V cells hence the nickname 'Duplex' In Switzerland as of 2008, 2R10 batteries accounted for 0.003% of primary battery sales.[8]
	4SR44	PX28A A544 K28A V34PX	4LR44 (alkaline)		110–150 (lithium) 170‑200 (silver‑oxide)	6.2 (lithium) 6.5 (silver‑oxide)	13 x 25.2	Used in film cameras, blood glucose meters, medical instruments, dog training devices.
	523	PX21	3LR50	1306A	580 (alkaline)	4.5	17.1 x 49.9	Used in cameras and Apple Macintosh computers (such as the 128K through 512K and similar).
	531	PX19	3LR50	1307AP	580 (alkaline)	4.5	17.1 x 58.3	A 523 with snap connectors attached to either end. Used in some older cameras.

Non-round multiple cell

Image	Most Common Name	Other Common Names	IEC Name	ANSI/NEDA Name	Typical Capacity (mAh)	Nominal Voltage (V)	Terminal layout	Dimensions	Comments
	J	7K67	4LR61 (alkaline)	1412A (alkaline)	625 (alkaline)	6	6.5 mm² flat contacts, − top side, + missing corner	H 48.5 mm L 35.6 mm W 9.18 mm	Typically used in applications where the device in question needs to be flat, or where one should not be able to insert the battery in reverse polarity, such as a blood glucose meter or blood pressure cuff. Also good for elderly persons, due to its large size. Often contains 4 LR61 cells which are similar to and often interchangeable with AAAA cells.
	Lantern (Big)	918 R25-2 Big Lantern Double Lantern MN918 Energizer 521	4R25-2 4LR25-2	918A	22000 (carbon‑zinc) 52000 (alkaline)	6	Screw posts on top of the battery. Only marked, no physical keying for polarity. Maximum diameter of the posts is 4.2 mm.	H 125.4 mm L 132.5 mm W 73 mm	For use in locations susceptible to high vibration/shock where connectors may be knocked off the terminals.
	Lantern (Screw)	Lantern 6 Volt Screw Top 6135-99-645-6443 (NSN)[3]	4LR25X (alkaline) 4R25X (carbon‑zinc)	915A (alkaline) 915 (carbon‑zinc)	26000 (alkaline) 10500 (carbon‑zinc)	6	Screw Posts Top, + Corner, − Centre Maximum diameter of the posts is 3.5 mm.	H 109.5 mm L 66.7 mm W 66.7 mm	For use in locations susceptible to high vibration/shock where connectors may be knocked off the terminals.
	Lantern (Spring)	See Lantern (Spring), above

PP series

The PP (Power Pack) series was manufactured by Ever Ready in the UK (Eveready in the US) and designates multi-cell carbon-zinc batteries. The batteries were used for portable electronic devices. Most sizes are uncommon today, however the PP3 size is readily available. ^[9][10] The PP4 was cylindrical, all other types were rectangular. Most have snap terminals as seen on the common PP3 type.

Image	PP series	Other Common Names	Typical Capacity (mAh)	Nominal Voltage (V)	Dimensions	Comments
	PP1			6	H 55.6 mm L 65.5 mm W 55.6 mm	This battery had 2 snap connectors. They were spaced 35.0 mm apart.
	PP3	See 9-volt, above
	PP4	226 NEDA 1600 IEC 6F24		9	H 50.0 mm Ø 25.5 mm
	PP6	246 NEDA 1602 6135-99-628-2361 (NSN)[3] IEC 6F50-2	850	9	H 70.0 mm L 36.0 mm W 34.5 mm	Centre distance between terminals is max 12.95 mm with both offset 7 mm nominal from the wider battery edge. Mass is 120 g.[3]
	PP7	266 NEDA 1605 6135-99-914-1778 (NSN)[3] IEC 6F90	2500	9	H 63 mm L 46 mm W 46 mm	Centre distance between terminals is max 19.2 mm. Mass is 200 g.[3]
	PP8	SG8 Fencer		6	H 200.8 mm L 65.1 mm W 51.6 mm	This battery typically had 2 snap connectors however 4 connector versions are available. They were spaced 35.0 mm apart. This type of battery is sometimes used in electric fencing applications.
	PP9	276 NEDA 1603 6135-99-945-6814 (NSN) [3] IEC 6F100	5000	9	H 81.0 mm L 66.0 mm W 52.0 mm	This battery had 2 snap connectors. They were spaced 35.0 mm apart.
	PP10			9	H 226.0 mm L 66.0 mm W 66.0 mm	This battery had 2 pin connectors. They were a single ⌀3.2 mm negative pin and a single ⌀4.0 mm positive pin spaced 13.0 mm apart.
	PP11			4.5 + 4.5	H 91.3 mm L 65.1 mm W 52.4 mm	This battery had 4 pin connectors. 9V was available by wiring in series. There were two ⌀3.2 mm negative pins spaced 9.5 mm apart and two ⌀4.0 mm positive pins spaced 14.3 mm apart. Negative and positive pins were spaced 18.1 mm apart.

Camera batteries

Digital and film cameras often use specialized primary batteries to produce a compact product. Flashlights and portable electronic devices may also use these types.

Image	Most Common Name	Other Common Names	IEC Name	ANSI/NEDA Name	Typical Capacity (mAh)	Nominal Voltage (V)	Shape	Terminal layout	Dimensions	Comments
	CR123A	Camera Battery 123 CR123 17345 16340 CR-123A 6135-99-851-1379 (NSN)[3]	CR17345 (lithium)	5018LC (lithium)	1500 (lithium) 700 (Li–ion rechargeable)	3 (lithium) 3.6 (Li-ion)	Cylinder	+ Nub cylinder end, − Flat opposite end	H 34.5 mm Ø 17 mm	A lithium primary battery, not interchangeable with zinc types. A rechargeable lithium-polymer version is available in the same size and is interchangeable in some uses. In Switzerland as of 2008, these batteries accounted for 16% of lithium camera battery sales.[8]
	CR2	15270 (Li-Ion Rechargeable) 6135-99-606-3982 (NSN)[3]	CR17355	5046LC	750 (lithium)	3 (lithium) 3.6 (Li-ion)	Cylinder	+ Nub cylinder end, − Flat opposite end	H 27 mm Ø 15.6 mm	Standard Discharge Current: 10 mA A common battery type in cameras and photographic equipment. In Switzerland as of 2008, these batteries accounted for 6% of lithium camera battery sales.[8]
	2CR5	EL2CR5 DL245 RL2CR5 6135-99-577-2940 (NSN)[3]	2CR5	5032LC[11]	1500	6	Double cylinder. Keyed.	Both on one end. Terminal centre spacing 16 mm.	H 45 mm L 34 mm W 17mm	Commonly used in film and digital cameras. Shaped so that it can be inserted into a battery compartment only one way. In Switzerland as of 2008, these batteries accounted for 1% of lithium camera battery sales.[8]
	CR-P2	BR-P2 223A CR17-33 5024LC	CR-P2	5024LC[12]	1500	6	Double cylinder. Keyed.	Both on one end. Terminal diameter: 8.7 mm. Terminal centre spacing: 16.8 mm.	H 36 mm L 35 mm W 19.5 mm	Shaped so that it can be inserted into a battery compartment only one way. Typical mass 37 g. They contain two 3V batteries which can be used in place of CR123 batteries.
	CR-V3	CRV3 RCR-V3 (Li-ion)		5047LC 5047LF (primary)[13]	3000 (lithium) 1300 (Li-ion)	3 (lithium) 3.6 (Li-ion)	Double cylinder flat pack. Keyed.	Both on one end	H 52.20 mm L 28.05 mm W 14.15 mm	The same size as two R6 (AA) cells side by side. A rechargeable type also is also made in this size. May be used in some devices not explicitly designed for CR-V3, especially digital cameras.

Button / coin / watch / micro / miniature cells

See also: Button cell

Lithium cells

Coin cells of various diameters and thicknesses.

Coin-shaped cells are thin compared to their diameter. The metal can is the positive terminal, and the cap is the negative terminal.

The IEC prefix "CR" denotes lithium manganese dioxide chemistry. Since LiMnO₂ cells produce 3 volts there are no widely available alternate chemistries for a lithium coin battery. The "BR" prefix indicates a round lithium/carbon monofluoride cell. See lithium battery for discussion of the different performance characteristics. One LiMnO₂ cell can replace two alkaline or silver-oxide cells.

All these lithium cells are rated nominally 3 volts (on-load), with open circuit voltage about 3.6 volts. Manufacturers may have their own part numbers for IEC standard size cells. The capacity listed is for a constant resistance discharge down to 2.0 volts per cell.^[14]

IEC 60086 designation	ANSI C18 /NEDA designation	Typical Capacity mAh	Standard discharge current mA	Dimensions (mm) Diameter x Height	Comments
CR927		30		9.5 × 2.7	This obscure type of lithium coin cell is used extensively in blinkies.
CR1025	5033LC	30	0.1	10 × 2.5
CR1216	5034LC	25	0.1	12.5 × 1.6
CR1220	5012LC	35–40	0.1 (CR) 0.03 (BR)	12.5 × 2.0
CR1225	5020LC	50	0.2	12.5 × 2.5	Maximum discharge current: 1 mA. Maximum pulse discharge current: 5 mA. {Energizer [15] says this type is obsolete.}
CR1616		50–55	0.1	16 × 1.6
CR1620	5009LC	75–78	0.1	16 × 2.0
CR1632		140  120 (BR)	0.1 (CR) 0.03 (BR)	16 × 3.2
CR2012		55	0.1	20 × 1.2
CR2016	5000LC	90	0.1 (CR) 0.03 (BR)	20 × 1.6	Often used in pairs instead of CR2032 for devices that require more than 3 V, like blue/white LED flashlights.
CR2025	5003LC	160–165	0.2	20 × 2.5
CR2032	5004LC	225 (CR) 190 (BR)	0.2 (CR) 0.03 (BR)	20 × 3.2	Maximum discharge current: 3 mA. Maximum pulse discharge current: 15 mA.
CR2320		110–175 [15]		23 × 2	3V
CR2325		165–210		23 × 2.5	3V
CR2330		265  255 (BR)	0.2 (CR) 0.03 (BR)	23 × 3.0
CR2354		560	0.2	23 × 5.4
CR2430	5011LC	270–290		24.5 × 3.0
CR2450	5029LC	610–620		24.5 × 5.0	Portable devices requiring high current (3.0 mA) and long shelf life (up to 10 years)
CR2477		1000	0.2	24.5 x 7.7
CR3032		500–560 500 (BR)	0.1 (CR) 0.03 (BR)	30.0 × 3.2
CR11108		160		11.8 x 11	Also called CR1/3N because it is one third the height of an alkaline N cell, and a stack of three of them will form a battery with the same dimensions as an N cell but with 9 V terminal voltage. Such 9 V batteries in a single package do exist but are rare and only usually found in specialist applications. Such a battery can be referred to as 3CR1/3N. However 2CR1/3N, a 6V battery consisting internally of a stack of two CR1/3N is sold by Duracell, Energizer and others.

Silver oxide and alkaline cells

Several sizes of button and coin cells. Some are alkaline and others are silver oxide. 2 9v batteries were added as a size comparison. Enlarge to see the button and coin cells’ size code markings.

SR/LR/AG/SG Button Cells: IEC SR series batteries are silver oxide chemistry and provide 1.55 volts, while IEC LR series batteries are alkaline chemistry and provide 1.5 volts. Similarly, SG prefix batteries are the silver oxide chemistry version of the alkaline AG prefix. Since there are no 'common' names beyond the AG designation, many vendors use these four designations interchangeably for the same sized cell, and they will all fit and work. The only difference is that silver oxide chemistry typically has 50% greater capacity than alkaline chemistry and usually a flat discharge characteristic (constant voltage), while the voltage of an alkaline battery decreases with use; and alkaline batteries are cheaper than silver. The capacity of a silver battery may be twice that of an alkaline. For devices which require a steady voltage such as photographic light meters and those which fail to operate below a certain voltage—some digital callipers do not work below 1.38V— a silver cell with flat discharge characteristic is indicated. Inexpensive devices are sometimes supplied fitted with alkaline batteries, though they would benefit from silver.

Round button cells have heights less than their diameter. The metal can is the positive terminal, and the cap is the negative terminal. Button cells are commonly used in electric watches, clocks, and timers. IEC batteries that meet the international IEC 60086-3 standard for watch batteries ^[16] carry a "W" suffix. Other uses include calculators, laser pointers, toys, LED "blinkies", and novelties.

IEC designation numbers indicate the physical dimensions of the cell. For cells less than one centimeter in height, the hundreds digits are the diameter in millimeters, while the last two digits are the height in tenths of millimeters. Taller cells get five digit numbers where the thousands digits are the diameter in millimeters, and the last three digits are the height in tenths of millimeters.

Sizes are shown for the silver-oxide IEC number; types and capacity are identified as (L) for alkaline and (S) for silver-oxide. In some cases, sizes which originally were distinct are now considered interchangeable. E.g., the 189/389 cell is 3.1 mm high and was designated 1131, while the 190/390 size is 3.0 mm high and was designated 1130, but these sizes are no longer distinguished.

Most Common Name	Other Common Names	IEC Name	ANSI/NEDA Name	Typical Capacity (mAh)	Dimensions (mm) Diameter x Height	Comments
SR41	AG3/SG3 LR41 192/384/392 6135-99-949-0402 (NSN)(S)[3]	LR736 (L) SR736 (S)	1135SO (S) 1134SO (S)	25–32 (L) 38–45 (S)	7.9 × 3.6
SR43	AG12/SG12 LR43 186/301/386 6135-99-547-0573 (NSN)(S)[3]	LR1142 (L) SR1142 (S)	1133SO (S) 1132SO (S)	80 (L) 120–125 (S)	11.6 × 4.2
SR44	AG13/SG13 LR44/LR154 6135-99-792-8475 (NSN)(alkaline) 6135-99-651-3240 (NSN)(S)[3] A76/S76/EPX76 157/303/357	LR1154 (L) SR1154 (S)	1166A (L) 1107SO (S) 1131SOP (S)	110–150 (L) 170–200 (S)	11.6 × 5.4	Typical internal resistance: 8ohm
SR45	AG9/SG9 LR45 194/394 6135-99-782-4675 (NSN)(S)[3]	LR936 (L) SR936 (S)		48 (L) 55–70 (S)	9.5 × 3.6
SR48	AG5/SG5 LR48 193/309/393	LR754 (L) SR754 (S)	1136SO (S) 1137SO (S)	52 (L) 70 (S)	7.9 × 5.4
SR54	AG10/SG10 LR54 189/387/389/390 LR1130/SR1130 6135-99-796-0471 (NSN)(S)[3]	LR1131 (L) SR1131 (S)	1138SO (S)	44–68 (L) 80–86 (S)	11.6 × 3.1
SR55	AG8/SG8 LR55 191/381/391 LR1120/SR1120	LR1121 (L) SR1121 (S)	1160SO (S)	40–42 (L) 55–67 (S)	11.6 × 2.1
	365,366,S16,608	SR1116SW		28-40[17]	11.6 x 1.65	1.55V
SR57	AG7/SG7 LR57 195/395/399 LR927/SR927 SR927W/GR927 6135-99-796-0471 (NSN)(S)[3]	LR926 (L) SR926 (S)	116550 (S)	46 (L) 55–67 (S)	9.4 × 2.6
SR58	AG11/SG11 LR58 162/361/362	LR721 (L) SR721 (S)	1158SO (S)	18–25 (L) 33–36 (S)	7.9 × 2.1
SR59	AG2/SG2 LR59 196/396/397	LR726 (L) SR726 (S)	1163SO (S)	26 (L) 30 (S)	7.9 × 2.6
SR60	AG1/SG1 LR60 164/364	LR621 (L) SR621 (S)	1175SO (S)	13 (L) 20 (S)	6.8 × 2.1
SR63	AG0/SG0 LR63 379	LR521 (L) SR521 (S)		10 (L) 18 (S)	5.8 × 2.1
SR66	AG4/SG4 LR66 177/377 SR626SW	LR626 (L) SR626 (S)	1176SO (S)	12–18 (L) 26 (S)	6.8 × 2.6
SR67	315	SR716 (S)		21 (S)	7.9 × 1.65
SR69	AG6/SG6 LR69 171/371 LR920/SR920	LR921 (L) SR921 (S)		30 (L) 55 (S)	9.5 × 2.1
SR516	SR516SW 317	LR516 (L) SR516 (S)		11 (S)	5.8 x 1.6
SR416	SR416SW 337	LR416 (L) SR416 (S)		8 (S)	4.8 x 1.6
LR932		LR932 (L)		40 (L)	9.3 × 3.2	Rarely used independently. 8 of these in series used in A23 battery.

Zinc air cells (hearing aid)

Zinc-air hearing aid batteries

Miniature zinc-air batteries are button cells that use oxygen in air as a reactant and have very high capacity for their size. Each cell needs around 1 cubic centimetre of air per minute at a 10 mA discharge rate. These cells are commonly used in hearing aids. A sealing tab keeps air out of the cell in storage; a few weeks after breaking the seal the electrolyte will dry out and the battery becomes unusable, regardless of use. Nominal voltage on discharge is 1.2 volts.

Most Common Name	Other Common Names	IEC 60086 Name	ANSI/NEDA Name	Typical Capacity (mAh)	Dimensions (mm) Diameter x Height	Comments
5	AC5	PR63	7012ZD	33	5.8 × 2.5	Marked as "discontinued" in Energizer data sheet [18]
10	yellow tab	PR70	7005ZD	91	5.8 × 3.6
13	orange tab	PR48	7000ZD	280	7.9 × 5.4
312	brown tab 6135-99-752-3528 (NSN)[3]	PR41	7002ZD	160	7.9 × 3.6
675	blue tab	PR44	7003ZD	600	11.6 × 5.4
AC41E		PR43	7001Z	390	11.6 × 4.2	Discontinued

Round lithium-ion rechargeable

Disassembled 18650 showing the internal coiled flat-pack lithium polymer cell

Lithium-ion rechargeable batteries are not interchangeable with primary types with different chemistry. Lithium-ion cells are made in various sizes, usually made into packs for portable equipment. All of these cylindrical cells have a nominal voltage around 3.7 volts, and have a positive terminal nub at one end and flat negative terminal at the other. Many types are available with an internal protection circuit to prevent over-discharge and short-circuit damage. Safe and economic recharging requires use of chargers specified for these cells. Popular applications include laptop battery packs and flashlights.

Some sizes of lithium primary cells have lithium-ion rechargeable equivalents.

Most common name	Other common names	IEC name	ANSI/NEDA name	Typical capacity (mAh)	Dimensions (max) Diameter x Length (mm)	Comments
10180				90	10 x 18
10280				200	10 x 28
10440				340	10 x 44	Same size as AAA cell.
14250				300	14 x 25	Same size as 1/2 AA cell.
14500[19]				700	14 x 50	Same size as AA cell.
14650				1600	14 x 65
15270				450-600	15 x 27	Substitute for CR2 primary lithium. 3V.
16340				500-1000	16 x 34	Alternate substitute for CR123A primary lithium[20]. Unprotected. (16 x 36, some protected versions[21]).
RCR123A	17340, R123, RCR123, Tenergy 30200[22]			750	17 x 34.5	Same size as, and substitute for, CR123 primary lithium for cameras and flashlights. Protected version.
17500[23]				1100	17.3 x 50	The same size as an A cell, and 1.5 times the length of a CR123A.
17670[24]				1250	17 x 67	2 times the length of a standard CR123A.
18350				700-1200	18 x 35 (nominal)	[25].
18500[26]				1400	18.3 x 49.8
18650[27]	168A			2200–3000	18.6 x 65.2	This cell type is used in many laptop batteries and the Tesla Roadster and LED flashlights.[28]
19670	Protected 18650[29]			2200–3000	19 x 67	Correct designation of protected 18650.[30]
25500[31]				2500–5000	24.3 x 49.2	About the same size as a C cell.
32600[32]				3000–6000	32 x 61.9	About the same size as a D cell.

See also

• Battery holder
• Nine-volt battery
• Battery (vacuum tube)
• Battery recycling
• List of battery types
• Battery nomenclature

References

1. ^ ^{a b} David Linden, Thomas B. Reddy (ed). Handbook of Batteries, 3rd edition, McGraw-Hill, New York, 2002 ISBN 0-07-135978-8 chapter 4
2. ^ Heinz Albert Kiehne, Battery technology handbook,CRC Press, 2003 ISBN 0-8247-4249-4, page 374
3. ^ ^{a b c d e f g h i j k l m n o p q r s t u v w x y} Defence Standards: 61 Series - Electrical Wire and Power
4. ^ [1] INOBAT 2008 statistics.
5. ^ http://data.energizer.com/PDFs/E146X.pdf
6. ^ http://www.mahaenergy.com/store/viewItem.asp?idProduct=273
7. ^ "Rechargeable N Size Battery - Robot Room". http://www.robotroom.com/NCell.html. Retrieved October 10, 2010. 
8. ^ ^{a b c d} INOBAT 2008 statistics.
9. ^ Thomas Roy Crompton Battery Reference Book 3rd edition , Newnes, 2000, ISBN 0-7506-4625-X, page 54-11
10. ^ http://the-thompson-brown-family.co.uk/batteries/batteriesframe.htm Batteries
11. ^ http://data.energizer.com/PDFs/2cr5.pdf
12. ^ http://data.energizer.com/PDFs/223.pdf
13. ^ http://data.energizer.com/PDFs/crv3.pdf
14. ^ http://www.batteriesplusmore.ca/electronics.php Battery table retrieved 2010 Jan 13
15. ^ 1 2 http://www.batteryship.com/htmlos/htmlos.cgi/batteryship/catalog.html?item=CR2320&model=IEC+BR2320 3]
16. ^ IEC 60086-3 standard for watch batteries
17. ^ 12
18. ^ http://data.energizer.com/PDFs/ac5.pdf AC5 data sheet
19. ^ [2] Datasheet for GP1450L70, confirms all data here. Retrieved 8th July 2011
20. ^ [3] What are the differences between RCR123, R16340 and R17345 batteries? Retrieved 2nd August 2011
21. ^ [4] 16340 Battery Warning!
22. ^ http://www.tenergybattery.com/index.php?option=com_virtuemart&page=shop.product_details&flypage=shop.flypage&category_id=21&product_id=390&Itemid=1 Data sheet retrieved 2010 Nov 24
23. ^ [5] Datasheet for GMB17500, confirms all data here. Retrieved 8th July 2011
24. ^ [6] Datasheet for Panasonic CGR17670HC, confirms all data here. Retrieved 8th July 2011
25. ^ [7] What are the differences between R17670, 18650 and R19670 batteries? Retrieved 9th August 2011
26. ^ [8] Datasheet for GPB18500, confirms all data here. Retrieved 8th July 2011
27. ^ [9] Datasheet for CGR18650DA, confirms all data here. Retrieved 8th July 2011
28. ^ [10] What are the differences between R17670, 18650 and R19670 batteries? Retrieved 9th August 2011
29. ^ [11] The Anatomy of a Protected Battery Retrieved 2nd August 2011
30. ^ [12] What are the differences between R17670, 18650 and R19670 batteries? Retrieved 9th August 2011
31. ^ [13] Datasheet for Saft VL25500-125, confirms all data here. Retrieved 8th July 2011
32. ^ [14] Datasheet for Saft VL32600-125, confirms all data here. Retrieved 8th July 2011

• IEC 60086-1: Primary batteries - Part 1: General
• IEC 60086-2: Primary batteries - Part 2: Physical and electrical specifications
• IEC 60086-3: Primary batteries - Part 3: Watch batteries
• IEC 60086-4: Primary batteries - Part 4: Safety of lithium batteries

• ANSI C18.1, Part 1 Portable Primary Cells and Batteries With Aqueous Electrolyte - General and Specifications
• ANSI C18.1, Part 2 Portable Primary Cells and Batteries With Aqueous Electrolyte Safety Standard
• ANSI C18.2, Part 1 Portable Rechargeable Cells and Batteries - General and Specifications
• ANSI C18.2, Part 2 Portable Rechargeable Cells and Batteries Safety Standard
• ANSI C18.3, Part 1 Portable lithium Primary Cells and Batteries - General and Specifications
• ANSI C18.3, Part 2 Portable lithium Primary Cells and Batteries Safety Standard

• MOD Defence standard D/DSTAN/61/17
• MOD Defence standard D/DSTAN/61/21

External links

• A growing list of battery equivalents and details. Courtesy of the Highfields Amateur Radio Club (Cardiff, UK).
• Maxell Micro Battery Cross Reference
• Duracell Technical OEM Data Sheets
• Energizer/Eveready Data Sheets
• Energizer/Eveready European Data Sheets
• Panasonic lithium Coin cells Specifications
• Brand Neutral Drawings Of Common Batteries Based On ANSI C18-2007
• EU Report on battery labelling