Wrist Watch Battery Sizes Chart – Replacement & Repair Guide

Published on: May 20, 2022
Written by Liam Jaxon / Fact-checked by David Rowan

Time is the most valuable part of our life. for 24 hours we planned how to spend our day and life. Knowing the time is very important for us and we use the watch to know the exact time. Different types of watches are in the wrist Watch one of them. In this article, we describe all the detailed information about the wrist watch battery so that you can manage your watch ownself. 

What Is Wrist Watch Battery Size 

The battery is the heart part of any watch because it produces power. Most wrist watches come with one battery but rarely sometimes it can be two coins or a button battery. All batteries have a life after the period you have to replace the battery. 

Different types of wrist watch batteries are available in the market, the alkaline/silver-oxide coin battery, and lithium non-rechargeable batteries are very common. Some manufacturers use rechargeable batteries on their wrist watches. 

This article describes various factors of a wrist watch battery. So that you can get knowledge a to z of this site. 

Alkaline Button/Silver-Oxide/Coin Cell Batteries

Most of the time the button/ coin cell batteries are used in wrist watches. They are non-rechargeable batteries. Different types of a button or coin batteries are available in the market but the most known are alkaline and silver-oxide batteries. 

Most of the time the button/ coin cell batteries are used in wrist watches. They are non-rechargeable batteries. Different types of a button or coin batteries are available in the market but the most known are alkaline and silver-oxide batteries.

These batteries also arrive as zinc-air batteries, but this kind of battery is not used in the wrist watch. Mercury-oxide batteries are another common wrist watch battery. Due to the mercury content, they do not use presents. 

 In the following table, comparison is given:-

Factors	Mercury-Oxide	Zinc Air	Alkaline	Silver-Oxide
Typical Labels	MR##, MR####	PR##, P###, Z###	LR##, LR####, AG##	SR##, SR##SW, SR####SW, SG##
Volt	1.35V	1.4 – 1.45V	1.5V	1.55V
Notes	Produce lower voltage and contains mercury.	Lower voltage and high capacity.	Voltage drops over time	Very constant voltage

Alkaline

This is a good and affordable price button/ coin cell battery. Work very well with the wrist watch.  Alkaline batteries produce 1.5 volts, but the voltas drop quickly when used. Generally, wrist watches need constant and relatively high voltage, and this battery works well when you use it on a wrist watch. 

It is also known as a button cell for its size and shape. to run down within months of being installed. Most of the time alkaline batteries last 3 to 5 years.  

Silver Oxide

Silver-oxide button/coin cell batteries are very common and most are the most popular type of wrist watch batteries.  For the reasonable price and good quality manufactures use this. Durability is another good feature of silver oxide batteries. During the working time, this item produces a constant voltage. This high-energy battery lasts a long time.  

This table presents a cross-reference chart of alkaline and silver oxide common wrist watch batteries with battery size chart:-

Dimensions	Silver Oxide Battery	Alkaline Battery	Model
4.8 x 1.6 millimeter	SR416, SR416SW, SR416S, 337	LR416	SR416SW Battery
5.8 x 1.6 millimeter	SR516, SR516SW, SR62, 317	LR516, LR62	317 Battery
5.8 x 2.1 millimeter	SR521, SR521S, SR521SW, SR63, 379, SG0, AG0	LR521, LR63, AG0	SR521SW Battery
5.8 x 2.7 millimeter	SR527, SR527S, SR527SW, SR64, 319	LR527, LR64	319 Battery
6.8 x 1.65 millimeter	SR616, SR616W, SR616SW, 321, V321	–	SR616SW Battery
6.8 x 2.1 millimeter	SR621, SR621SW, SR60, 164, 364, SG1, AG1	LR621, LR60, AG1	SR621SW Battery
6.8 x 2.6 millimeter	SR626, SR626SW, SR66, 177, 376, 377, SG4, AG4	LR626, LR66, AG4	SR626SW Battery
7.9 x 1.3 millimeter	SR712, SR712S, SR712SW, 346	–	346 Battery
7.9 x 1.65 millimeter	SR716, SR716SW, SR67, 315	–	315 Battery
7.9 x 2.1 millimeter	SR721, SR721W, SR721SW, SR721PW, SR58, 162, 361, 362, SG11, AG11	LR721, LR58, AG11	SR721SW Battery
7.9 x 2.6 millimeter	SR726, SR726W, SR726SW, SR726PW, SR59, 196, 396, 397, SG2, AG2	LR59, LR726, AG2	396 Battery
7.9 x 3.1 millimeter	SR731, SR731SW, 24, 329	LR731	329 Battery
7.9 x 3.6 millimeter	SR41, SR736, SR736PW, SR736SW, SG3, AG3, 192, 384, 392	LR41, LR736, AG3	384 Battery
7.9 x 5.4 millimeter	SR754, SR754W, SR754SW, SR754PW, SR48, 193, 309, 393, SG5, AG5	LR754, LR48, L750, AG5	393 Battery
9.5 x 1.6 millimeter	SR916SW, SR68, 373, SR916	LR916	SR916SW Battery
9.5 x 2.1 millimeter	SR920W, SR920SW, SR920PW, SR920, SR921, SR69, 171, 370, 371, SG6, AG6	LR920, LR921, AG6	SR920SW Battery
.5 x 2.6 millimeter	SR927W, SR927SW, SR927PW, SR927, SR926, SR57, 395, 399, SG7, AG7	LR57, LR927, LR926, AG7	395 Battery
9.5 x 3.6 millimeter	SR936, SR936SW, SR45, 194, 394, SG9, AG9	LR45, LR936, AG9	394 Battery
11.6 x 1.65millimeter	SR1116, SR1116W, SR1116SW, SR1116PW, 365, 366, S16, 608	–	365 Battery
11.6 x 2.1 millimeter	SR1120W, SR1120SW, SR1120PW, SR1121, SR55, 191, 381, 391, SG8, AG8	LR1120, LR1121, LR55, V8GA, AG8	381 Battery
11.6 x 3.1 millimeter	SR1130W, SR1130SW, SR1130PW, SR1131, SR54, 189, 387, 389, 390, AG10	LR1130, LR1131, LR54, V10GA, AG10	389 Battery
11.6 x 3.6 millimeter	SR1116, SR1116S, SR1116SW, SR1116PW, 366	–	366 Battery
11.6 x 4.2 millimeter	SR43W, SR43, SR43SW, 386, 301, AG12, SR1142, SR1142SW	LR43, AG12, LR1142	386 Battery

SR626SW Watch Battery

Silver-oxide wrist watch batteries are very common. It comes in a different category, SR626SW is one of them. It is a coin cell battery with physical dimensions of 6.8 x 2.6 millimeters.

The nominal voltage of this battery is 1.55 volts. It’s a good quality item that lasts long but it depends on the drain or use of the battery. Weather, temperature, and voltage also play an important role in battery life.

Silver-oxide has a more stable voltage and capacity than the alkaline cell battery.  R626SW battery comes with levels like other batteries. When you pick one for your watch, check it carefully. 

Lithium Button/Coin Cell Battery

Most of the lithium button/coin cells batteries are non-rechargeable primary 3V batteries.  They are affordable and the most popular battery. 

Manganese-dioxide lithium batteries are one kind of cattery of lithium batteries. This kind of battery label starts with ‘C’. Most of the time the operating temperature range is between -20°C (-4°F) and 70°C (158°F). The nominal voltage is 3.0 Volt.  

On the other hand, the carbon-monofluoride lithium batteries’ labels start with ‘B’ and its operating temperature range is -30°C (-22°F) and 85°C (185°F). 2.8 volt is the nominal voltage.

Here is a table that shows a cross-reference chart of lithium 3V coin cell batteries:-

Dimension of The Battery	Equivalents/Replacements	Model
9.5 x 2.7 mm	CR927, DL927	CR927 Battery
10.0 x 2.5 mm	CR1025, DL1025, 5033LC	CR1025 Battery
11.5 x 3.0 mm	CR1130, DL1130, BR1130, KL1130, L1130	CR1130 Battery
12.5 x 1.6 mm	CR1216, DL1216, 5034LC	CR1216 Battery
12.5 x 2.0 mm	CR1220, DL1220, SB-T13, 5012LC	CR1220 Battery
12.5 x 2.5 mm	CR1225, DL1225, 5020LC	CR1225 Battery
16.0 x 1.6 mm	CR1616, DL1616	CR1616 Battery
16.0 x 2.0 mm	CR1620, DL1620, 5009LC	CR1620 Battery
16.0 x 2.5 mm	CR1625	CR1625 Battery
16.0 x 3.2 mm	CR1632, DL1632	CR1632 Battery
20.0 x 1.2 mm	CR2012, SB-T15	CR2012 Battery
20.0 x 1.6 mm	CR2016, DL2016, E-CR2016, SB-T11, 5000LC	CR2016 Battery
20.0 x 2.0 mm	CR2020	CR2020 Battery
20.0 x 2.5 mm	CR2025, DL2025, BR2025, LiR2025, E-CR2025, SB-T14, 5003LC	CR2025 Battery
20.0 x 3.2 mm	CR2032, DL2032, ECR2032, BR2032, E-CR2032, SB-T51, 5004LC, LiR2032	CR2032 Battery
20.0 x 4.0 mm	CR2040	CR2040 Battery
23.0 x 2.0 mm	CR2320	CR2320 Battery
23.0 x 2.5 mm	CR2325	CR2325 Battery
23.0 x 3.0 mm	CR2330, BR2330	CR2330 Battery
23.0 x 3.5 mm	CR2335, BR2335	CR2335 Battery
23.0 x 5.4 mm	CR2354	CR2354 Battery
24.5 x 1.2 mm	CR2412	CR2412 Battery

CR1216 Watch Battery

This model is the most popular and common lithium watch battery in the market. It’s suitable with a different brand of wristwatch. Many small device tools also use this CR1226 cell battery. Thus is a non-rechargeable lithium battery that features physical dimensions is 12.5 x 1.6 millimeters and its nominal voltage is 3.0 volts. The typical capacity of this item is 25 mAh. 

The durability of this item depends on various factors, among the most important factors is the use and temperature. If you use it for different purposes, the battery lifetime will be short. This model lithium battery can be replaced with a BR1216 battery.  

CTL Watch Batteries

The full name of the CTL battery is ‘Cobalt Titanium Lithium’. It is a rechargeable button/coin cell battery. The nominal voltage is 2.3 volt and the charging voltage is 2.5-2.7. Most of the time this type of battery is used for power watches, a smartwatch, or sometimes for the smart fitness band. It is commonly used for automatic solar watches for suitableness. 

The CTL watch battery comes with the best quality. The CTL920, CTL1616, and CTL621 batteries are very common models.

The Panasonic CTL batteries are very popular and useful. Many solar watches manufacturers use Panasonic CTL batteries for the best performance and quality. You can easily find them, for this reason, manufacturers want to use this item. Panasonic CTL920F and  ‘CTL920’ batteries are very popular models.

This table shows the popular CTL batteries information:- 

Factors	CTL621	CTL920	CTL1616
Nominal Voltage	2.3 volts	2.3 volts	2.3 volts
Continuous Drain Current	0.02 mA	0.05 mA	0.1 mA
Nominal Capacity	3.6 mAh	7.7 mAh	13.0 mAh
Max. Dimensions (D x H)	6.8 x 2.1 millimeter	9.5 x 2.0 millimeter	16.0 x 1.6 millimeter
Amazon Link	CTL621 Battery	CTL920 Battery	CTL1616 Battery

Lithium Titanium Button/Coin Cell Batteries

This battery is also known as the MT button or coin cell battery. It’s also very popular with the user and manufacturers.  The nominal voltage of this item is 1.5 volt. 

The MT621, MT920, and MT516 batteries are popular and most used models. Actually this battery works like a CTL battery. The main difference between CTL and MT batteries is the nominal voltage. Mt batteries features are lower than the CTL but it generates more energy. 

This table shows some popular MT batteries characteristics:- 

Features	MT516	MT920	MT621
Nominal Voltage	1.5 volts	1.5 volts	1.5 volts
Nominal Capacity	1.8 mAh	5.0 mAh	2.5 mAh
Dimensions	5.8 x 1.6 millimeter	9.5 x 2.0 millimeter	6.8 x 2.1 millimeter
Amazon Link	MT516 Battery	MT920 Battery	MT621 Battery

FAQs

How Do I Know What Size Battery for My Watch?

You should follow the insertion to find out the size of your wrist watch. You also can check the back part of your watch size and battery model name are present in this area that will help you to know the size of the battery.

What Watch Batteries Last the Longest?

The lithium battery is designed for long-lasting. Many experts suggest that lithium batteries last longer than other batteries. Many manufacturers use this for durability.

Important Tips and Direction for Replacing a Watch Battery

1. For the first time when your wrist watch can’t work go to the watch shop to find out the reason for this issue. If your watch is damaged then the battery will be fine in this situation you need not replace the battery. 

2.  It’s the best idea to follow manufactures’ guidelines to pick the right battery for your wristwatch. If you have an option to choose then pick an available and good quality watch battery. 

3. Right battery size, model, and types are necessary factors to pick a battery for your wrist watch. If you miss these then you can not find out the perfect one. Follow guidelines and instructions to replace the wrist watch battery. 

4. Manage all necessary tools if you are replacing the watch battery at home. Because proper tools are very important, if you don’t have the right tools you can not open or replace the battery. Some watches need only screws and watches need special watch tool kits.

5. Do not clean or lubricate your watch when you are replacing the battery. Because it takes time for this reason dust can enter inside part of the watch and it can damage your watch. It’s a good idea to replace the battery quickly. 

6. If your watch has a warranty period then do not open it ownself. Take it to the shop or manufacturer to replace the battery. 

7. Replacing the battery is not hard work either, it’s an easy process just needing to follow the instructions. But if you are not an expert in replacing wrist watch batteries then go to the shop and change it.

Read more:

• LR621, 364, AG1, SR621SW Battery Equivalents, and Replacements
• LR626, LR66, 177/376/377, SR626, SR626SW, AG4 Battery Equivalents Chart
• How Can I Prevent My Car Battery From Being Stolen
• How Long Does a Wrist Watch Battery Last