Wrist Watch Battery Replacement Chart

Wrist watches are commonly powered using one or rarely two button/coin cell batteries, and these batteries have limited operating lifetime. When replacing old battery with the new one, the best practice is to use batteries recommended by watch manufacturer.

However, finding exact type and model can be sometimes confusing due to different labels some battery brands are using for their batteries. Also, using silver-oxide instead of alkaline batteries can prolong the watch operating time on a single battery.

Instead of silver-oxide/alkaline coin cell batteries, some watches uses lithium non-rechargeable batteries, and even some of them support the use of rechargeable button/coin lithium cell batteries.

Silver-Oxide/Alkaline Button/Coin Cell Batteries

376 377 sr626sw battery mButton/coin cell batteries are group of non-rechargeable batteries often used in wrist watches.

There are several chemistry types of these batteries - most common are alkaline and silver-oxide batteries.

These batteries also come as zinc-air batteries, which are used mostly as hearing aid batteries and due to the rather limited operating lifetime, they are not used in watches.

Mercury-oxide batteries were very common wrist watch batteries, but they are not used anymore due to their mercury content.

Comparison of these chemistries is given in the following table:

Chemistry Alkaline Silver-Oxide Zinc Air Mercury-Oxide
Voltage 1.5V 1.55V 1.4 - 1.45V 1.35V
Notes Voltage drops over time Very constant voltage Slightly lower voltage, large capacity;
mostly used as hearing aid batteries
Slightly lower voltage, contains mercury;
not in use anymore
Typical Labels LR##, LR####, AG## SR##, SR##SW, SR####SW, SG## PR##, P###, Z### MR##, MR####
Typical LR626/SR626SW Capacity 15 - 17 mAh 25-27 mAh - -

Alkaline: Alkaline button/coin cell batteries are reliable and cheap batteries. Their nominal voltage is 1.5 volts, but as the battery is used, their voltage quickly drops.

Actual capacity depends on the cut-off voltage of the used watch. Wrist watches often require constant and relatively high voltage, making nominal capacity of these batteries rather low - such device will require new replacement batteries rather quickly. If alkaline batteries are used in devices that tolerate low battery voltage, than nominal capacity is larger, since such device will not require new batteries soon.

Shelf life depends on the manufacturer, but generally newer alkaline batteries have shelf life of at least 5 years.

Silver Oxide: Silver-oxide button/coin cell batteries are the most popular type of wrist watch batteries - they are not expensive, often have shelf life of 10 or more years, they have very constant voltage during operation, which is very similar to the nominal voltage of alkaline batteries (1.55 V vs 1.50 V).

Typical capacity of, for example, silver-oxide SR626SW is in the 25-27 mAh range, which is larger than equivalent alkaline LR626 capacity (15-17 mAh).

Here is a cross reference chart of common button/coin cell wrist watch batteries:

Diameter Height Silver Oxide
Alkaline Amazon Search
4.8 mm 1.6 mm

SR416, SR416SW, SR416S, 337

LR416 337 Battery
5.8 mm 1.6 mm

SR516, SR516SW, SR62, 317

LR516, LR62 317 Battery
5.8 mm 2.1 mm

SR521, SR521S, SR521SW, SR63, 379, SG0, AG0

LR521, LR63, AG0 379 Battery
5.8 mm 2.7 mm

SR527, SR527S, SR527SW, SR64, 319

LR527, LR64 319 Battery
6.8 mm 1.65 mm

SR616, SR616W, SR616SW, 321, V321

- 321 Battery
6.8 mm 2.1 mm

SR621, SR60, 164, 364, SG1, AG1

LR621, LR60, AG1 364 Battery
6.8 mm 2.6 mm

SR626, SR626SW, SR66, 177, 376, 377, SG4, AG4

LR626, LR66, AG4 376 Battery
7.9 mm 1.3 mm

SR712, SR712S, SR712SW, 346

- 346 Battery
7.9 mm 1.65 mm

SR716, SR716SW, SR67, 315

- 315 Battery
7.9 mm 2.1 mm

SR721, SR721W, SR721SW, SR721PW, SR58, 162, 361, 362, SG11, AG11

LR721, LR58, AG11 361 Battery
7.9 mm 2.6 mm

SR726, SR726W, SR726SW, SR726PW, SR59, 196, 396, 397, SG2, AG2

LR59, LR726, AG2 396 Battery
7.9 mm 3.1 mm

SR731, SR731SW, 24, 329

LR731 329 Battery
7.9 mm 3.6 mm

SR41, SR736, SR736PW, SR736SW, SG3, AG3, 192, 384, 392

LR41, LR736, AG3 384 Battery
7.9 mm 5.4 mm

SR754, SR754W, SR754SW, SR754PW, SR48, 193, 309, 393, SG5, AG5

LR754, LR48, L750, AG5 393 Battery
9.5 mm 1.6 mm

SR916SW, SR68, 373, SR916

LR916 373 Battery
9.5 mm 2.1 mm

SR920W, SR920SW, SR920PW, SR920, SR921, SR69, 171, 370, 371, SG6, AG6

LR920, LR921, AG6 370 Battery
9.5 mm 2.6 mm

SR927W, SR927SW, SR927PW, SR927, SR926, SR57, 395, 399, SG7, AG7

LR57, LR927, LR926, AG7 395 Battery
9.5 mm 3.6 mm

SR936, SR936SW, SR45, 194, 394, SG9, AG9

LR45, LR936, AG9 394 Battery
11.6 mm 1.65 mm

SR1116, SR1116W, SR1116SW, SR1116PW, 365, 366, S16, 608

- 365 Battery
11.6 mm 2.1 mm

SR1120W, SR1120SW, SR1120PW, SR1121, SR55, 191, 381, 391, SG8, AG8

LR1120, LR1121, LR55, V8GA, AG8 381 Battery
11.6 mm 3.1 mm

SR1130W, SR1130SW, SR1130PW, SR1131, SR54, 189, 387, 389, 390, AG10

LR1130, LR1131, LR54, V10GA, AG10 389 Battery
11.6 mm 3.6 mm

SR1116, SR1116S, SR1116SW, SR1116PW, 366

- 366 Battery
11.6 mm 4.2 mm

SR43W, SR43, SR43SW, 386, 301, AG12, SR1142, SR1142SW

LR43, AG12, LR1142 386 Battery
11.6 mm 5.4 mm

SR44W, SR44, SR44SW, 157, 357, 303, SG13, AG13, S76, A76, SR1154

LR44, 76A, AG13, LR1154, A76 357 Battery

Note: Amazon affiliate links open in the new windows, feel free to check them. Most common silver-oxide wrist watch battery is SR626SW (SW - Silver, Watch) battery, but other batteries are used as well.

Lithium Button/Coin Cell Batteries

cr2032 battery mLithium button/coin cells are mostly primary (non-rechargeable) 3V batteries. Their negative electrode is lithium, while positive electrode is either manganese-dioxide or carbon-monofluoride.

Manganese-dioxide lithium batteries' labels start with 'C' and generally their operating temperature range is between -20°C (-4°F) and 70°C (158°F). Nominal voltage is 3.0 V, and a cutoff voltage is 2.0 V. Typical example is CR2032 battery, with typical capacity of ~225 mAh

Carbon-monofluoride lithium batteries' labels start with 'B' and generally their operating temperature range is -30°C (-22°F) and 85°C (185°F). Nominal voltage is 2.8 V, and a cutoff voltage is 2.25 V. Typical example is BR2032 battery, with typical capacity of ~190 mAh.

Generally BR#### and CR#### are interchangeable batteries - slight lower voltage of BR#### batteries is not problem, at least not for most common devices. But, for devices operating in extreme temperatures, BR#### batteries are recommended over CR#### batteries.

Nominal capacity of rechargeable lithium button/coin cell batteries is lower than non-rechargeable CR or BR batteries, but they can be charged and discharged many times (up to or even more than 1000 times). Their most common label is LiR#### and nominal voltage is 3.6 or 3.7 volts.

For example, LiR2032 (or LIR2032, ML2032 etc.) capacity is in the 50-80 mAh range, while typical capacity of CR2032 battery is ~225 mAh.

Replacing CR or BR types of batteries with LiR batteries should be done only if the device operates properly when being powered with 3.6V (instead of 2.8 or 3.0V). This 0.6V difference can cause operating issues and it can even damage certain devices.

On the other hand, 1000+ charging/discharging cycles can save plenty of money.

Personally, if you have a watch that uses lithium batteries, go for good CR#### battery since it has much higher capacity. Also, BR#### are good choice if you need your watch to operate in extreme temperature conditions.

Here is a cross reference chart of common lithium 3V coin cell batteries:

Diameter Height Equivalents/Replacements Amazon Search
9.5 mm 2.7 mm CR937, DL937 CR937 Battery
10.0 mm 2.5 mm CR1025, DL1025, 5033LC CR1025 Battery
11.5 mm 3.0 mm CR1130, DL1130, BR1130, KL1130, L1130 CR1130 Battery
12.5 mm 1.6 mm CR1216, DL1216, 5034LC CR1216 Battery
12.5 mm 2.0 mm CR1220, DL1220, SB-T13, 5012LC CR1220 Battery
12.5 mm 2.5 mm CR1225, DL1225, 5020LC CR1225 Battery
16.0 mm 1.6 mm CR1616, DL1616 CR1616 Battery
16.0 mm 2.0 mm CR1620, DL1620, 5009LC CR1620 Battery
16.0 mm 2.5 mm CR1625 CR1625 Battery
16.0 mm 3.2 mm CR1632, DL1632 CR1632 Battery
20.0 mm 1.2 mm CR2012, SB-T15 CR2012 Battery
20.0 mm 1.6 mm CR2016, DL2016, E-CR2016, SB-T11, 5000LC CR2016 Battery
20.0 mm 2.0 mm CR2020 CR2020 Battery
20.0 mm 2.5 mm CR2025, DL2025, BR2025, LiR2025, E-CR2025, SB-T14, 5003LC CR2025 Battery
20.0 mm 3.2 mm CR2032, DL2032, ECR2032, BR2032, E-CR2032, SB-T51, 5004LC, LiR2032 CR2032 Battery
20.0 mm 4.0 mm CR2040 CR2040 Battery
23.0 mm 2.0 mm CR2320 CR2320 Battery
23.0 mm 2.5 mm CR2325 CR2325 Battery
23.0 mm 3.0 mm CR2330, BR2330 CR2330 Battery
23.0 mm 3.5 mm CR2335, BR2335 CR2335 Battery
23.0 mm 5.4 mm CR2354 CR2354 Battery
24.5 mm 1.2 mm CR2412 CR2412 Battery
24.5 mm 3.0 mm CR2430 CR2430 Battery
24.5 mm 5.0 mm CR2450 CR2450 Battery
24.5 mm 7.7 mm CR2477 CR2477 Battery
30 mm 3.2 mm CR3032, BR3032 CR3032 Battery

Note: Amazon affiliate links open in the new windows, feel free to check them. Most common lithium coin cell wrist watch battery is CR2032 battery, but other batteries are used as well.

CR2032 is commonly used in many small devices and appliances and getting a new one should not be a problem.

Long Story Short: A new watch battery should picked according to the watch manufacturer's recommendations. If your old battery was alkaline battery and your watch support the use of silver-oxide batteries, go for silver-oxide battery. Alkaline batteries are somewhat cheaper, but the end price difference is almost negligible.

Lithium ion batteries are not so common in wrist watches, but units using these batteries can operate on a single battery for a very long time.

Personally, if you are unsure about your watch, go to the nearest watch shop and let the professionals replace the battery - better safe than sorry :)