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
Button/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:
|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:
|4.8 mm||1.6 mm||
SR416, SR416SW, SR416S, 337
|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
|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
|7.9 mm||1.65 mm||
SR716, SR716SW, SR67, 315
|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
|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
|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
|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
|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
Lithium 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:
|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 :)