List of battery sizes
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Battery size is generally the shape, voltage, and terminal layout of a battery. Thus the term "size" has become interchangeable with "type". Batteries of different types will usually not have the same dimensions and terminal layout.
This article refers to primary and other common battery types and sizes in household and light industrial use. A battery may consist of a single cell or two or more cells in a single package, such as the 2CR5 (two lithium cells packaged as one battery) and a 4LR44 (four LR44 cells packaged as one battery), or a 1604 9-volt battery which has six cells.
[edit] Battery chemistry
The terminal voltage of a battery depends on the chemicals it uses. For example, primary (non-rechargeable) alkaline batteries have a nominal voltage of 1.5 Volts representing one individual electrochemical cell. 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 16% reduction in voltage.
The battery designation in some cases also identifies not only the size, shape and terminal layout of the battery but also the voltage and chemistry. 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.
[edit] Non-standard brand-specific names
Manufacturers may assign novel 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. In this article, brand-specific names have been purposely omitted to avoid confusion.
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.
[edit] Table of modern primary battery sizes
The following table is a list of primary battery sizes currently available. Other sizes not listed in this table may no longer be available due to either a decline in popularity or changing technological needs. Batteries for obsolete portable vacuum tubes devices for example, are not listed. A table of older, obsolete, and uncommon-availability batteries types and sizes can be found below this table.
[edit] Most Common Batteries
| Most Common Name |
Other Common Names |
IEC 60086 Name |
ANSI/NEDA Name |
Typical Capacity (mAh) |
Nominal Voltage (V) | Shape | Terminal layout | Dimensions | Comments |
|---|---|---|---|---|---|---|---|---|---|
| AAA | Micro Microlight MN2400 MX2400 Type 286 (Soviet Union/Russia) |
LR03 (alkaline) R03 (carbon–zinc) FR03 (Li–FeS2) |
24A (alkaline) 24D (carbon–zinc) 24LF (Li–FeS2) |
1200 (alkaline) 540 (carbon–zinc) 800–1000 (Ni–MH) |
1.5 1.2 (NiMH and NiCd) |
Cylinder | + Nub cylinder end − Flat opposite end |
L 44.5 mm D 10.5 mm |
C16/HP16; |
| AA | Pencil-sized Penlight Mignon MN1500 MX1500 Type 316 (Soviet Union/Russia) |
LR6 (alkaline) R6 (carbon–zinc) FR6 (Lithium–FeS2) HR6 (Ni-MH) KR157/51 (NiCd) ZR6 (Ni-Mn) |
15A (alkaline) 15D (carbon–zinc) 15LF (Lithium–FeS2) 1.2H2 (NiMH) 10015 (NiCd) |
2700 (alkaline) 1100 (carbon–zinc) 3000 (Lithium–FeS2) 1700–2900 (NiMH) 600–1000 (NiCd) |
1.5 1.2 (NiMH and NiCd) |
Cylinder | + Nub cylinder end − Flat opposite end |
L 50.5 mm D 13.5–14.5 mm |
C7/HP7; |
| C | MN1400 MX1400 Baby Type 343 (Soviet Union/Russia) |
LR14 (alkaline) R14 (carbon–zinc) KR27/50 (NiCd) |
14A (alkaline) 14D (carbon–zinc) |
8000 (alkaline) 3800 (carbon–zinc) 4500–6000 (NiMH) |
1.5 1.2 (NiMH) |
Cylinder | + Nub cylinder end − Flat opposite end |
L 50 mm D 26.2 mm |
C11/SP11/HP11; Can be replaced with alkaline AA cell using plastic sabot (stub case) |
| D | U2 (In Britain until the 1970s) Flashlight Battery MN1300 MX1300 Mono Type 373 (Soviet Union/Russia) BA-30 (US Military Spec WWII-1980's) |
LR20 (alkaline) R20 (carbon–zinc) |
13A (alkaline) 13D (carbon–zinc) |
12000 (alkaline) 8000 (carbon–zinc) 2200–12000 (NiMH) |
1.5 1.2 (NiMH) |
Cylinder | + Nub cylinder end − Flat opposite end |
L 61.5 mm D 34.2 mm |
C2/SP2/HP2; Can be replaced with alkaline AA cell using plastic sabot (stub case) |
| 9-Volt | PP3 Radio battery MN1604 Square(sic) battery Krona (Soviet Union/Russia) |
6LR61 (alkaline) 6F22 (carbon–zinc) 6KR61 (NiCd) |
1604A (alkaline) 1604D (carbon–zinc) 1604LC (Lithium) 7.2H5 (NiMH) 11604 (NiCd) |
565 (alkaline) 400 (carbon–zinc) 1200 (lithium) 175-300 (NiMH) 120 (NiCd) 500 (Lithium polymer rechrg) |
9 7.2 (NiMH and NiCd) 8.4 (some NiMH and NiCd) |
Rectangular | both small end + male clasp − female clasp |
H 48.5 mm L 26.5 mm W 17.5 mm |
Many (not all) PP3 batteries are an array of 6 reversed-polarity (nub is negative while can is positive) AAAA cells welded together internally |
| Lantern (Spring) | Lantern 6 Volt Spring Top MN908 (UK) 996 or PJ996 |
4R25Y (alkaline) 4R25 (carbon–zinc) |
908A (alkaline) 908D (carbon–zinc) |
26000 (alkaline) 10500 (carbon–zinc) |
6 | Square | Springs Top + Corner − Center |
H 115 mm L 68.2 mm W 68.2 mm |
Springs are usually made so that leads for screw top can be fastened to them. In most applications this is fine (see next). |
[edit] Less Common Batteries
| Most Common Name |
Other Common Names |
IEC 60086 Name |
ANSI/NEDA Name |
Typical Capacity (mAh) |
Nominal Voltage (V) | Shape | Terminal layout | Dimensions | Comments |
|---|---|---|---|---|---|---|---|---|---|
| AAAA | MX2500 | LR8D425 (alkaline) | 25A (alkaline) | 625 (alkaline) | 1.5 | Cylinder | + Nub cylinder end − Flat opposite end |
L 42.5 mm D 8.3 mm |
Obscure type sometimes used in 'pen flashlights' or electronic glucose meters. Most common use is as an internal component of PP3 ("9-volt") batteries. |
| 1/2 AA | SAFT LS14250 Tadiran TL5101 UL142502P |
?? | ?? | ?? | 3.6 | Cylinder | + Nub cylinder end − Flat opposite end |
L 24 mm D 13.5-14.5 mm |
Same diameter as AA battery, used in small electronics, including pulse oximeters; image of comparison to AA battery |
| A23 | 23A 3LR50 MN21 |
8LR50 (alkaline) | 1181A (alkaline) | 40 (alkaline) | 12 | Cylinder (or button stack) |
+ Nub cylinder end − Flat opposite end |
L 29 mm D 10 mm |
Used in small RF devices such as key fob-style garage door openers and keyless entry systems where only infrequent pulse current is used. Sometimes enclosed like a normal battery but sometimes a stack of eight LR932 button cells shrink wrapped together. |
| A | ?? | ?? | ?? | ?? | 1.5 1.2 (NiMH) |
Cylinder | + Nub cylinder end − Flat opposite end |
L 50 mm D 17 mm |
|
| 18650 | ?? | ?? | 2200-2800 (Li–Ion) | 3.7 | Cylinder | + Nub cylinder end − Flat opposite end |
L 65 mm D 18 mm |
Sometimes used to create laptop battery packs or used in LED flashlight, cameras, etc. Some contain internal PCB to prevent under / over voltage protection | |
| CR123A | Camera Battery 123 CR123 R123 (Li-Ion) RCR123A RCR123 (Li-Ion) 17335 |
CR17345 (Lithium) | 5018LC (Lithium) | 1500 (Lithium) 700 (Li–Ion) |
3 (Lithium) 3.6 (Li-Ion) |
Cylinder | + Nub cylinder end − Flat opposite end |
L 34.5 mm D 17 mm |
CR (Cylindrical Lithium) 1 X 2/3A which breaks down further as 2/3 the size of an 'A' cell (an 'A' size cell is an industrial size) |
| CR2 | CR2 | CR17355 | 5046LC | 750 (Lithium) | 3 | Cylinder | + Nub cylinder end − Flat opposite end |
L 27 mm × D 15.6 mm | Standard Discharge Current: 0.2 mA common battery in cameras and photographic equipment |
| CR-V3 | CRV3 RCR-V3 (Li-Ion) |
3000 (Lithium) 1300 (Li-Ion) |
3 | Flat pack | Both on one end | 52.20 × 28.05 × 14.15 mm | Size and shape match that of side-by-side AA batteries, so that it may be used in some devices not explicitly designed for CR-V3, especially digital cameras. | ||
| Duplex | 2R10 | 3 | Cylinder | + Nub cylinder end − Flat opposite end |
H 74.6 mm D 21.8 mm |
Internally contains two 1.5 V cells hence the nickname 'Duplex' | |||
| F | 1.5 | Cylinder | + Nub cylinder end − Flat opposite end |
L 91 mm D 33 mm |
Four "F" Cells are usually found within most Lantern batteries. | ||||
| J | 7K67 | 4LR61 (alkaline) | 1412A (alkaline) | 625 (alkaline) | 6 | Square with missing corner |
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 the battery should be unable to be put in reverse polarity—such as a blood glucose meter or blood pressure cuff. Also good for elderly persons, due to the large size. |
| Lantern (Screw) | Lantern 6 Volt Screw Top |
4R25Y (alkaline) 4R25 (carbon–zinc) |
915A (alkaline) 908 (carbon–zinc) |
26000 (alkaline) 10500 (carbon–zinc) |
6 | Square | Screw Posts Top + Corner − Center |
H 115 mm L 68.2 mm W 68.2 mm |
For uses that have high vibration/shock where the leads may be knocked off springs. |
| Lantern (Big) | 918 R25-2 Big Lantern Double Lantern MN918 |
4LR25-24 (alkaline) 4R25-2 (carbon–zinc) 8R25 (carbon–zinc) |
918A (alkaline) 918D (carbon–zinc) |
52000 (alkaline) 22000 (carbon–zinc) |
6 | Square | Screw posts Apart top |
H 127 mm L 136.5 mm W 73 mm |
Dimenstions match 2 side-by-side standard lantern batteries; |
| N | Lady MN9100 SUM5 SUM-5 R1 |
LR1 (alkaline) | 910A (alkaline) | 1000 (alkaline) | 1.5 | Cylinder | + Nub cylinder end − Flat opposite end |
L 30.2 mm D 12 mm |
Typical uses include remote-control door chimes, and other low current drain devices. Also used for wireless microphones, "Mr. Microphone" type devices, and some laser pointers. |
| 4.5 Volt | Pocketable Battery 1203 4.5 V Type 3336 (Soviet Union/Russia) |
3LR12 (alkaline) 3R12 (carbon–zinc) |
MN1203 (manganese) | 6100 (alkaline) 1200 (carbon–zinc) |
4.5 | Flat pack | + short terminal strip − long terminal strip |
H 65 mm L 61 mm W 21 mm |
This battery is more common in Europe than North America. |
| No. 6 | Ignition Cell | 1.5 | Cylinder | + Center binding post − Rim binding post |
Typical uses include school science experiments, and starting glow plug model engines. | ||||
| Sub-C | Type 323 (Soviet Union/Russia) | 1200–2400 (NiCd) 1800–5000(NiMH) |
1.2 | Cylinder | + Nub cylinder end − Flat opposite end |
L 42.86 mm D 22.2 mm 27/16×7/8 in |
Extremely popular size for cordless tool battery packs. Also used in radio-controlled scale vehicle battery packs. 1/2-, 4/5- and 5/4-sub-C sizes (differing in length) are also popular. |
[edit] Button Batteries
See Naming Notes below about CR, BR, SR, LR, AG, and SG battery types.
| Most Common Name |
Other Common Names |
IEC 60086 Name |
ANSI/NEDA Name |
Typical Capacity (mAh) |
Nominal Voltage (V) | Shape | Terminal layout | Dimensions | Comments |
|---|---|---|---|---|---|---|---|---|---|
| CR636-2 | CR636-2 (Lithium manganese) | 3 | Pill | + bottom/sides − top |
L 9.9 mm H 3.6 mm W 5.9 mm |
Pill or oval shaped cell, used by Sanyo | |||
| CR736-2 | CR736-2 (Lithium manganese) | 3 | Pill | + bottom/sides − top |
L ? mm H 3 mm W 7 mm |
Pill or oval shaped cell, used by Sanyo | |||
| CR927 | 30 (Lithium) | 3 | Coin | + bottom/sides − top |
D 9.5 mm H 2.7 mm |
This obscure type of lithium coin cell is used extensively in blinkies. | |||
| CR1025 | DL1025 LM1025 |
CR1025 (Lithium) | 30 (Lithium) | 3 | Coin | + bottom/sides − top |
D 10 mm H 2.5 mm |
Standard Discharge Current: 0.1 mA | |
| CR1216 | DL1216 LM1216 |
CR1216 (Lithium) | 25 (Lithium) | 3 | Coin | + bottom/sides − top |
D 12.5 mm H 1.6 mm |
Standard Discharge Current: 0.1 mA | |
| CR1220 | CR1220 (Lithium) BR1220 (Carbon monofluoride Lithium) |
35-40 (Lithium) | 3 | Coin | + bottom/sides − top |
D 12.5 mm H 2.0 mm |
Standard Discharge Current: 0.1 mA (Lithium), 0.03 mA (Carbon monofluoride Lithium) | ||
| CR1225 | CR1225 (Lithium) BR1225 (Carbon monofluoride Lithium) |
50 (Lithium) | 3 | Coin | + bottom/sides − top |
D 12.5 mm H 2.5 mm |
Standard Discharge Current: 0.2 mA. Maximum discharge current: 1 mA. Maximum pulse discharge current: 5 mA. | ||
| CR1616 | CR1616 (Lithium) | 50-55 (Lithium) | 3 | Coin | + bottom/sides − top |
D 16 mm H 1.6 mm |
Standard Discharge Current: 0.1 mA | ||
| CR1620 | CR1620 (Lithium) | 75-78 (Lithium) | 3 | Coin | + bottom/sides − top |
D 16 mm H 2.0 mm |
Standard Discharge Current: 0.1 mA | ||
| CR1632 | CR1632 (Lithium) BR1632 (Carbon monofluoride Lithium) |
140 (Lithium) 120 (Carbon monofluoride Lithium) |
3 | Coin | + bottom/sides − top |
D 16 mm H 3.2 mm |
Standard Discharge Current: 0.1 mA (Lithium), 0.03 mA (Carbon monofluoride Lithium) | ||
| CR2012 | CR2012 (Lithium) | 55 (Lithium) | 3 | Coin | + bottom/sides − top |
D 20 mm H 1.2 mm |
Standard Discharge Current: 0.1 mA | ||
| CR2016 | DL2016 | CR2016 (Lithium) BR2016 (Carbon monofluoride Lithium) |
5000LC (Lithium) | 90 (Lithium) | 3 | Coin | + bottom/sides − top |
D 20 mm H 1.6 mm |
Standard Discharge Current: 0.1 mA (Lithium), 0.03 mA (Carbon monofluoride Lithium). Often used in pairs instead of CR2032 for devices that require more than 3 V, like blue/white LED flashlights. CAUTION: Using two CR2016 when not specified can damage a device. |
| CR2025 | DL2025 | CR2025 (Lithium) | 5003LC (Lithium) | 160-165 (Lithium) | 3 | Coin | + bottom/sides − top |
D 20 mm H 2.5 mm |
Standard Discharge Current: 0.2 mA. |
| CR2032 | DL2032 | CR2032 (Lithium) BR2032 (Carbon monofluoride Lithium) |
5004LC (Lithium) | 220-225 (Lithium) | 3 | Coin | + bottom/sides − top |
D 20 mm H 3.2 mm |
Standard Discharge Current: 0.2 mA (Lithium), 0.03 mA (Carbon monofluoride Lithium). Maximum discharge current: 3 mA. Maximum pulse discharge current: 15 mA. Common battery in computers to keep the date and CMOS settings current when power is off. |
| CR2330 | CR2330 (Lithium) BR2330 (Carbon monofluoride Lithium) |
265 (Lithium) 255 (Carbon monofluoride Lithium) |
3 | Coin | + bottom/sides − top |
D 23 mm H 3.0 mm |
Standard Discharge Current: 0.2 mA (Lithium), 0.03 mA (Carbon monofluoride Lithium) | ||
| CR2354 | CR2354 (Lithium) | 560 (Lithium) | 3 | Coin | + bottom/sides − top |
D 23 mm H 5.4 mm |
Standard Discharge Current: 0.2 mA | ||
| CR2450 | DL2450 | CR2450 (Lithium) | 5029LC (Lithium) | 610-620 (Lithium) | 3 | Coin | + bottom/sides − top |
D 24.5 mm H 5.0 mm |
Portable devices requiring high current (30 mA) and long shelf life (up to 10 years) |
| CR2477 | P120ND | CR2477 (Lithium) | 1000 (Lithium) | 3 | Coin | + bottom/sides − top |
D 24.5 mm H 7.7 mm |
Standard Discharge Current: 0.2 mA | |
| CR3032 | CR3032 (Lithium) BR3032 (Carbon monofluoride Lithium) |
500-560 (Lithium) 500 (Carbon monofluoride Lithium) |
3 | Coin | + bottom/sides − top |
D 30.0 mm H 3.2 mm |
Standard Discharge Current: 0.2 mA (Lithium), 0.03 mA (Carbon monofluoride Lithium) | ||
| SR41 | AG3/SG3 LR41 192/384/392 |
LR736 (alkaline) SR736 (silver oxide) |
1135SO (silver oxide) 1134SO (silver oxide) |
25-32 (alkaline) 38-45 (silver oxide) |
1.50 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 7.9 mm H 3.6 mm |
Watches, Clocks, Timers, Blinky lights, Laser Pointers |
| SR43 | AG12/SG12 LR43 186/301/386 |
LR1142 (alkaline) SR1142 (silver oxide) |
1133SO (silver oxide) 1132SO (silver oxide) |
80 (alkaline) 120-125 (silver oxide) |
1.50 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 11.6 mm H 4.2 mm |
Watches, Clocks, Timers |
| SR44 | AG13/SG13 LR44/LR154 A76/S76 157/303/357 |
LR1154 (alkaline) SR1154 (silver oxide) |
1166A (alkaline) 1107SO (silver oxide) 1131SOP (silver oxide) |
110-150 (alkaline) 170-200 (silver oxide) |
1.50 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 11.6 mm H 5.4 mm |
Watches, Clocks, Timers, Blinky lights |
| SR45 | AG9/SG9 LR45 194/394 |
LR936 (alkaline) SR936 (silver oxide) |
48 (alkaline) 55-70 (silver oxide) |
1.50 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 9.5 mm H 3.6 mm |
Watches, Clocks, Timers | |
| SR48 | AG5/SG5 LR48 193/309/393 |
LR754 (alkaline) SR754 (silver oxide) |
1136SO (silver oxide) 1137SO (silver oxide) |
52 (alkaline) 70 (silver oxide) |
1.5 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 7.9 mm H 5.4 mm |
Watches, Clocks, Timers |
| SR54 | AG10/SG10 LR54 189/387/389/390 LR1130/SR1130 |
LR1131 (alkaline) SR1131 (silver oxide) |
1138SO (silver oxide) | 44-68 (alkaline) 80-86 (silver oxide) |
1.50 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 11.6 mm H 3.1 mm |
Watches, Clocks, Timers, Blinky lights |
| SR55 | AG8/SG8 LR55 191/381/391 LR1120/SR1120 |
LR1121 (alkaline) SR1121 (silver oxide) |
1160SO (silver oxide) | 40-42 (alkaline) 55-67 (silver oxide) |
1.5 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 11.6 mm H 2.1 mm |
Watches, Clocks, Timers |
| SR57 | AG7/SG7 LR57 195/395/399 LR927/SR927 |
LR926 (alkaline) SR926 (silver oxide) |
116550 (silver oxide) | 46 (alkaline) 55-67 (silver oxide) |
1.5 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 9.4 mm H 2.6 mm |
Watches, Clocks, Timers |
| SR58 | AG11/SG11 LR58 162/361/362 |
LR721 (alkaline) SR721 (silver oxide) |
1158SO (silver oxide) | 18-25 (alkaline) 33-36 (silver oxide) |
1.5 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 7.9 mm H 2.1 mm |
Watches, Clocks, Timers |
| SR59 | AG2/SG2 LR59 196/396/397 |
LR726 (alkaline) SR726 (silver oxide) |
1163SO (silver oxide) | 26 (alkaline) 30 (silver oxide) |
1.5 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 7.9 mm H 2.6 mm |
Watches, Clocks, Timers |
| SR60 | AG1/SG1 LR60 164/364 |
LR621 (alkaline) SR621 (silver oxide) |
1175SO (silver oxide) | 13 (alkaline) 20 (silver oxide) |
1.5 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 6.8 mm H 2.1 mm |
Watches, Clocks, Timers |
| SR63 | AG0/SG0 LR63 379 |
LR521 (alkaline) SR521 (silver oxide) |
10 (alkaline) 18 (silver oxide) |
1.50 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 5.8 mm H 2.1 mm |
Watches, Clocks, Timers | |
| SR66 | AG4/SG4 LR66 177/377 SR626SW |
LR626 (alkaline) SR626 (silver oxide) |
1176SO (silver oxide) | 12-18 (alkaline) 26 (silver oxide) |
1.5 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 6.8 mm H 2.6 mm |
Watches, Clocks, Timers |
| SR69 | AG6/SG6 LR69 171/371 LR920/SR920 |
LR921 (alkaline) SR921 (silver oxide) |
30 (alkaline) 55 (silver oxide) |
1.5 (alkaline) 1.55 (silver oxide) |
Button | + bottom/sides − top |
D 9.5 mm H 2.1 mm |
Watches, Clocks, Timers |
[edit] Naming notes
- CR# / BR# / SR# / LR# Button Cells (where the code contains 3 to 4 numeric digits): Uses an alphanumeric coding system defined by the International Electrotechnical Commission (IEC) in its current 60086-3 standard (Primary batteries, part 3 Watch batteries). Examples of this code are batteries coded CR2032, SR516, and LR1154 where the letters and numbers in that code indicate the battery's characteristics. The numbers in the code correlate with the cell dimensions, being the diameter in millimetres (except for the extra half millimetre in some cases) followed by the height in tenths of a millimetre. SR and LR button cells where the code contains only one or two numeric digits conform to an older international standard.
- 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 series batteries are the silver oxide chemistry version of the AG series where AG usually indicates alkaline chemistry. Since there are no 'common' names beyond the AG# designation, many places 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. In low-drain devices like watches (without lights) this isn't very important, but in high-drain devices like blinkies, key chain flashlights, or laser pointers silver oxide is preferred. Often the free 'demo' batteries that come with a device are the alkaline version.
- IEC CR# / BR# Button Cells: CR denotes Manganese dioxide Lithium chemistry. Since LiMnO2 cells produce 3 volts there are no widely available alternate chemistries for a CR coin battery. Conversely one LiMnO2 cell can replace two alternate chemistry cells, in a 3, 6, 9, or 12 volt secondary battery. Though often hard to find, some CR sizes are also sold designated as BR, such as the BR2032. BR types have a slightly different chemistry (Poly-carbon monofluoride Lithium) giving a higher capacity but at the expense of maximum discharge current. They are more suited to memory retention applications.
- Button / Coin / Watch / Micro / Miniature: In many places these are used interchangeably.
[edit] See also
 |
Wikimedia Commons has media related to: Electric batteries |
- Battery holder
- Nine-volt battery
- Lantern battery
- LR44 battery (Good example of manufacturer naming versus IEC/ANSI naming)
- 2CR5 battery (Good example of a secondary battery)
- Button cell
- Battery (vacuum tube)
- Battery recycling
- Battery types
[edit] References
- 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
[edit] External links
- A growing list of battery equivalents and details. Courtesy of Brian, MW0GKX, a member 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
- Panasonic Data Sheet on Poly-carbonmonofluoride Lithium coin batteries
- Powerstream.com Battery Chemistry Tutorial
- The relevant US standard is ANSI C18.1 American National Standard for Dry Cells and Batteries-Specifications.
- Brand Neutral Drawings Of Common Batteries Based On ANSI C18-2007
- Industrial Battery (Traction) OEM Sizes and Data Sheets
- EU Report on battery labeling
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