Opposite opinions can be heard on this issue, but you don’t want to pay for an expensive watch for a mistake.
If the watch is cheap (in the sense, absolutely - economy class), then there is no difference: the problems in them will not start from the battery. And if they are expensive, then it is unlikely that they will have a low-quality battery?
Yes, not so. The watch manufacturer's services also want to eat. And what is the point of releasing watches that live without maintenance for more than 5 years?
Therefore, it is important to wear even high-end watches for preventive maintenance, which will determine when the battery needs to be replaced.
And - yes: it is better to do this annually, so as not to miss the moment when the battery can leak.
Tip for watch owners: Ask them to write down on a piece of paper the characteristics of the battery in your watch if it does not need to be replaced during preventive maintenance. This way you will know exactly what kind of battery you will need in reserve. The letters indicate the material of manufacture of the batteries, the manufacturer will suggest whether it is worth taking the same battery again, and how well it has proven itself.
Also, after replacing the battery, ask to leave the old one for you: unscrupulous craftsmen in the services change their native high-quality battery to its cheap alkaline counterpart, moreover, without informing you.
What batteries to choose?
Markings on batteries CR and SR - indicate more or less high-quality batteries of lithium and silver-zinc classes. You can take.
LR - alkaline batteries, often leak, do not work much. If the clock is not a pity, then it will do.
The best manufacturers of watch batteries
Japanese manufacturers Sony, Seiko, Casio hold the palm. Expensive, but long-lived, do not flow.
The manufacturers Maxell and Seizaiken have a pleasant price-quality ratio: their batteries have good reviews in the CR and SR classes.
Duracell and GP - as lucky. They rarely flow, but there are few statements about longevity.
Oddly enough, the worst reviews are from European manufacturers: Varta and Renata (Switzerland and Germany) - they live a little, there are often leaks, moreover, while the clock is still running.
Opposite opinions can be heard on this issue, but you don’t want to pay for an expensive watch for a mistake.
If the watch is cheap (in the sense, absolutely - economy class), then there is no difference: the problems in them will not start from the battery. And if they are expensive, then it is unlikely that they will have a low-quality battery?
Yes, not so. The watch manufacturer's services also want to eat. And what is the point of releasing watches that live without maintenance for more than 5 years?
Therefore, it is important to wear even high-end watches for preventive maintenance, which will determine when the battery needs to be replaced.
And - yes: it is better to do this annually, so as not to miss the moment when the battery can leak.
Tip for watch owners: Ask them to write down on a piece of paper the characteristics of the battery in your watch if it does not need to be replaced during preventive maintenance. This way you will know exactly what kind of battery you will need in reserve. The letters indicate the material of manufacture of the batteries, the manufacturer will suggest whether it is worth taking the same battery again, and how well it has proven itself.
Also, after replacing the battery, ask to leave the old one for you: unscrupulous craftsmen in the services change their native high-quality battery to its cheap alkaline counterpart, moreover, without informing you.
What batteries to choose?
Markings on batteries CR and SR - indicate more or less high-quality batteries of lithium and silver-zinc classes. You can take.
LR - alkaline batteries, often leak, do not work much. If the clock is not a pity, then it will do.
The best manufacturers of watch batteries
Japanese manufacturers Sony, Seiko, Casio hold the palm. Expensive, but long-lived, do not flow.
The manufacturers Maxell and Seizaiken have a pleasant price-quality ratio: their batteries have good reviews in the CR and SR classes.
Duracell and GP - as lucky. They rarely flow, but there are few statements about longevity.
Oddly enough, the worst reviews are from European manufacturers: Varta and Renata (Switzerland and Germany) - they live a little, there are often leaks, moreover, while the clock is still running.
Battery types by chemical composition
There are three common types of batteries:
- Silver oxide
- Alkaline (alkaline)
- Lithium
Lithium batteries typically have a voltage of 3 volts (and larger sizes), while silver oxide and alkaline batteries are 1.5 volts.
Silver oxide and alkaline batteries can be interchanged, but there are a few things to keep in mind.
At the moment, the world's leading battery manufacturers practically do not produce alkaline models, preferring the manufacture of silver oxide batteries.
Ceteris paribus, an alkaline battery will cost less than a similar silver oxide one, but this is where its advantages will be limited. Silver oxide batteries represent a modern implementation of batteries and are superior in terms of stability and durability to their alkaline counterparts.
Battery dimensions
Lithium batteries are easy to size based on their alphanumeric markings. The first two digits indicate the diameter of the battery in millimeters (whole numbers), and the second two indicate its thickness in millimeters (with tenths). So, for example, the CR2430 marking means that you have a battery with a diameter of 24 mm and a thickness of 3.0 mm.
The situation is somewhat more complicated with the determination of the size of a silver oxide or alkaline battery by marking. To avoid confusion, we recommend that you use the correspondence table for markings from different manufacturers.
Prefixes
Battery labeling can contain not only numbers, but also Latin letters. That letter or letters that are in the marking before the numbers is called a prefix, and there are not so many possible combinations of them, and if they are present, they indicate the type of battery. Below we give explanations on the meaning of possible combinations:
- BR - lithium;
- CR - lithium;
- L - alkaline;
- SR - silver oxide;
- LR - alkaline;
- SG - silver oxide;
- AG - alkaline;
Suffixes
In addition to the prefix and the digital part, the battery marking may have a suffix - one or more Latin letters located at the end of it.
As a rule, the suffix is used for silver oxide batteries and can have two meanings:
- W - for devices with high power consumption;
- SW - for devices with low power consumption;
For example, two batteries of the same silver oxide type and the same physical dimensions might be labeled SR1130W and SR1130SW.
If we talk about watches, then the indication for the use of batteries with the suffix W is the presence in the watch of the backlight of the dial or other energy-consuming functions that are not typical for “just a watch on a battery”.
In all other cases, batteries with the SW suffix are sufficient. However, the difference in price between them is minimal, and there is nothing wrong with using batteries with the W suffix in any watch.
Best before date
Batteries that are not in use, however, are prone to losing charge over time. The amount of these losses depends on storage conditions and type of batteries.
At a temperature of 21 degrees, losses for silver oxide and alkaline batteries are within 10%, and for lithium batteries they are about 2% per year.
Determining the right type of battery
Different manufacturers use different ways of labeling batteries, in addition, as we wrote above, alkaline batteries can be replaced with silver oxide batteries of similar size.
In this regard, if you are holding your old battery in your hands and you need a new one, the question of which one to choose, however, may not have such a simple answer.
We recommend that you use the matching table to determine which battery from our range matches your old battery.
To always know the time, you need not only to wear a watch on your hand or in your pocket, but also to have reliable ones. Otherwise, they may stop at the most inopportune moment. It is very important that the alarm clock functions correctly, otherwise you can oversleep.
Below is information on the size of watch batteries used in wristwatches.
There is also a marking of batteries for watches.
How to change the battery in a watch?
To install a new battery, you will have to disassemble the device and pull out the worn out current source. It is advisable to do this before the electrolyte flows. This can happen due to the poor quality of the current storage device or due to the long stay of the element in the clock. For example, if the battery is dead and has been in them for several years.
You can read about how to change the battery for a watch here: Also there you will learn how to disassemble a watch with a battery at home.
List of watches with a 10 year battery
- Casio W-753
- Casio W-210
- Casio AE-1000
- Casio AE-3000
- Casio DBC-32
- Casio LW-200
- Casio AE-1200
- Casio W-756
- Casio AE-2000
- Casio AEQ-110
- Casio AEQ-110
- Casio AE-1400
- Casio HDD-600
- Casio AQ-180
- Casio AEQ-200
- Casio LW-203
- Casio W-735
- Casio F-201
- Casio AE-2100
- Casio AW-80
- Casio STR-300
- Casio W-752
- Casio W-800
To find out exactly what the battery in the watch costs, you will have to open it. But perhaps you will find their name in the table below.
Watch Battery Correspondence Chart
| Watch name | Suitable watch battery |
| Casio (Casio) | |
| Sony watch battery (). | 1) ().2) SR726 The batteries for this device can be 3 and 1.5 volts. |
| swatch | |
| Tissot watch battery. | 394, SW at 1.55V, SR616SW |
| Current source in Nick's watch | Tablet elements. |
| Orient watch battery | |
| Current storage for smart watches | This is a 350-380 mAh battery at 3.7 volts. Width 24 mm, height 31 mm. |
| Montana | LR41 at 1.5 volts. |
| Guess watch battery | , |
| Batteries in watches amber | Round keg with markings. Type D. R20 |
| Karser ks 9897 | Depending on the model, watches from this company can be equipped with batteries of the type or in the form of coins. |
| Orient | 377, SR626 |
| Fossil (fossil) | LR621 |
| Electronics 52 | Battery 362 |
| Clock diesel | , SR616, These current elements are set depending on the model. |
Also, for some types of time indicators, batteries of the 1220 tablet form for 3 volts are ideal.
Quartz clock battery operated or not?
In fact, in each watch, a number of nodes are distinguished due to which the device as a whole operates.
Yes, quartz watches come with batteries.
How much does a watch battery cost?
The cost of such a current source fluctuates around 100 rubles. Some stores might be more expensive, some cheaper.
If you want to get yourself the best watch batteries, then always buy silver type oxide from the company or. Table clocks usually contain or small elements and are designated as AA and.
Most models use 1.5-1.55 V batteries. Despite the fact that the current source is up to 1.4 volts, the watch can still work. It is this tension that is capable of sustaining the movement.
The parameters, that is, the shape must strictly correspond to the hole in the mechanism. Particular attention should be paid to the height and diameter.
When the user finds it difficult to determine what type of battery is in the device, it is better to find out the type of module and select a battery from it. For replacement, you can contact the service center or do it yourself. Above it was told how to do it.
Measure the diameter and height of the battery connector. This is best done by gluing the strip to the bottom and then taking measurements.
Remember that the thinner the battery, the less it will last due to its low capacity..
The most tiresome thing in life is to wait and catch up. In order to have to wait less and catch up less often, the Babylonians invented a sundial as early as 3500 BC. The first mechanical watch was supposedly invented in 966 by Pope Sylvester II, the very first mechanical wrist watch appeared in 1775 thanks to the Swiss Abraham Louis Breguet. Modern quartz wrist and wall clocks appeared only in 1937 thanks to the efforts of Lewis Essen from the Royal Greenwich Observatory.
Currently, the share of mechanical wristwatches in operation, in which an electronic circuit is used instead of a pendulum, is more than 90%. In appearance, wrist mechanical and quartz watches are no different, but if you look inside, the difference will be obvious.
The photo shows the mechanism of a fully mechanical watch with an open back. On the right, similar to a ship's steering wheel, there is a pendulum, which ensures the accuracy of the clock.
In quartz watches, the speed of movement of the second, minute and hour hands is provided, as in a mechanical watch, by gears, and a quartz generator is installed instead of a pendulum. The spring is replaced by an electric battery.
The electrical circuit and the principle of operation of a quartz watch
Quartz watches, regardless of the manufacturer and size, owe their accuracy to the quartz resonator, which ensures stable operation of the oscillator at a frequency of 32768 Hz, made on a microcircuit. The microcircuit in appearance is a semiconductor crystal with wires extending from it. To protect the crystal from external influences, it is filled with a compound, so in a watch the microcircuit looks like a flattened drop of dark plastic.
The electrical circuitry of a quartz watch from any manufacturer, be it Casio, Tissot, QQ, Geneva, Swatch or any other, looks the same. The supply voltage from the battery is supplied through a switch mechanically connected to the crown of the watch, which watchmakers call the crown. When the crown is pulled away from the watch case, the switch contacts open, and the supply voltage to the microcircuit is not supplied. The clock stops. In the vast majority of quartz watches, a 1.5 V DC battery is installed. But sometimes there are models designed for a 3.0 V supply voltage.
In the microcircuit, the frequency of the quartz oscillator is divided to a frequency of 1 Hz (1 Hz = one oscillation per second), and these pulses are applied to the electromagnet coil of a stepper micromotor with a sequentially changing polarity. Two permanent magnets of different polarity are mounted in the rotor of the stepper motor. When the rotor magnets interact with the magnetic field of the electromagnet changing to the opposite, the rotor rotates 180 ° with each change. On the rotor shaft there is also a trib rotor, which is a gear that transmits torque to the gears of the watch mechanism.
The presented electrical circuit of a quartz clock is used in all types of quartz clocks - wrist, wall and even wall with a pendulum - and differs only in the use of batteries of different capacities and stepper motor power.
When to change the watch battery
Over time, even watches that have a fresh battery from well-known brands inserted into them begin to fall behind and soon stop, which indicates the need to change the battery. Some models have the “END OF LIFE” function, due to which, in the event of a low remaining battery capacity, the second hand starts to move not by one division of the dial, but jumps over several at once, thereby informing the owner of the watch that it is time to change the battery. The life of the battery depends on its capacity and current consumption by the electronic circuit of the clock and ranges from one to five years.
Preparing a workplace for repairs
If you decide to replace the battery in your watch with your own hands, then before starting work, you should prepare the workplace. In the mechanism of a quartz watch, in addition to the electronic unit, there are gears with microscopic teeth, and getting between the teeth of even a tiny foreign particle, such as dust, hair, dandruff or dirt, can lead to their partial or complete loss of performance. If the surface of the table is hard, then after a successful replacement of the battery, scratches may appear on the watch case.
Therefore, the table must first be dusted with a damp cloth and then covered with a white sheet of paper or a lint-free cloth of sufficient size. The white color is convenient because if a screw or other small detail is accidentally dropped, it will be easy to find them. It is advisable to wear a headdress, such as a baseball cap, or tie your hair with a scarf.
I would think twice before giving an expensive watch for battery replacement to a watchmaker sitting in an untidy booth with bare hair.
Preparing the watch for battery replacement
The battery, depending on its capacity and watch model, usually lasts from one to several years. During this time, a lot of dirt accumulates in the recesses of the watch case and the voids of the bracelet. The leather strap is also dirty on the inside. To prevent dirt from entering the mechanism when replacing the battery, and for hygienic reasons, it is necessary to clean the watch and bracelet, and it is better to replace the strap, since it is almost impossible to completely remove dirt from its pores.
The bracelet or strap is attached to the watch using two thin metal tubular straps (clips). The bar is a thin-walled tube into which a spring is inserted and two pins movably fixed on one or both sides.
If you press the pin along the axis, then it will sink into the tube, and if you release it, it will come out again. The length of the tube is slightly less than the distance between the ears, and there are blind holes in the ears. Thus, if the pins are recessed and then inserted into the holes of the lugs, then the straps are securely fixed in the watch case.
The section of the bracelet that attaches to the bar from the back has a recess specifically designed to allow the bar pin to sink in when the bracelet is removed. In some bars, the pin can only be sunk on one side, so when installing the bracelet, you need to orient the bar so that you have access to the movable pin. Otherwise, it will be very difficult to remove the bracelet from the watch in the future.
In order to remove the bracelet, you need a sharp object, for example, a knife or an awl, to hook on the protrusion on the pin and sink it into the strap tube, then it will easily separate. The bracelet is installed in the reverse order: one pin of the strap is inserted into the hole of one ear, and the second pin (after drowning) is inserted into the opposite hole of the ear. After fixing the bracelet, you must make sure that both pins are in the holes of the ears. To do this, just pull a couple of times on the bracelet.
When fitting the bracelet, orient it correctly by pointing the latch of the bracelet towards the six o'clock side of the dial.
How to clean your watch and bracelet from dirt
The clock is well cleaned of dirt with the help of a toothbrush moistened in soapy water from laundry soap. It is best to remove all dirt from the bracelet by placing it in the dishwasher. You can wash the strap in the washing machine, but for this you need to put it either in a pocket with a zipper, or in a special bag for washing small items, or in a sock, stocking, tying them in a knot.
How to open the lid of a watch
To replace the battery, you need to remove the cover, which is located on the side of the watch to the hand. The cover is attached depending on the watch model in one of four ways. On screws, due to a tight fit of the cover in the watch case or on a thread cut directly on the cover itself, or with the help of a retaining ring with an external thread pressing it against the case.
How to remove a cover fixed with screws
To remove the cover from the clock, fixed with screws, it is enough to unscrew all the screws. First, using a small screwdriver with a suitable slotted blade (the screwdriver from the watch repair screwdriver set is best), you need to loosen diametrically opposed screws in pairs, as when changing wheels on a car. And then unscrew the screws in any order.
When reinstalling the cover, all screws should be tightened to the stop and then cross-tightened with a little force.
How to remove the snap cover
Before opening a watch with a lid shown in the photo, held by friction forces, it is necessary to carefully examine the place of contact of its edge with the watch case.
Usually, in the area of the ears for attaching a bracelet or strap, there is a barely noticeable gap formed by a protrusion on the cover or a recess in the case.
To remove the cover, it is necessary to insert a thin blade of a knife into this slot and, resting it against the body and acting as a lever, lift the cover. It is unacceptable to press hard with a knife, because if it breaks when the lid is opened, the mechanism can be damaged. When opening a watch with a snap-on lid, there are usually no questions, it is often difficult to install the lid in its original place.
How to remove a cover fixed with a thread
In expensive and waterproof watches, as a rule, the cover is attached using a thread cut on the edge of the cover or a retaining ring.
In the photo you see a watch with a lid attached with threads cut on its edge.
And in this photo, the cover is pressed with a retaining ring with an external thread. Threaded methods allow you to tightly press the cover through the sealing gasket to the body, and thereby reliably protect their mechanism from dust and moisture.
In addition, such a cover is easier to remove and install, especially if there is a special key, for example, as in this photo. By turning the knurled nut, the distance between the pins of the wrench can be changed to unscrew caps and circlips of different diameters.
How to unscrew the lid using improvised means
Not every home master has a special key for unscrewing the covers at hand, and if the clock got up due to a dead battery, then ordering and waiting for the key to arrive is not always acceptable. Yes, and spending money, if you can get by with improvised means, is irrational.
The most common tool that home craftsmen use is a caliper with tucked jaws. It is enough to spread the jaws to the width of the grooves in the cover, fix this position with a screw, and the caliper is ready for use. The ends of its sponges are inserted into the grooves of the cover, and with a clamp they turn it counterclockwise. The main thing is to move the cover from its place, and then it will easily turn away.
If there is no caliper available, then you can use any tweezers, giving the paws a shape corresponding to the profile of the grooves on the cover using an emery column. If it is difficult to turn the tweezers by hand, then you can insert a screwdriver between the tweezers tabs at the surface of the lid and unscrew the lid in such a way as with a lever.
It will also be easier and more convenient to unscrew the lid with tweezers if you shape the ends of his legs, as in the photo. The width of the spread of the legs of the tweezers can be fixed by inserting between them, for example, a piece of plywood of the required thickness and securing it with electrical tape or tape. Such a refinement will not spoil the tweezers, and it will be possible to continue to use it for its intended purpose.
Unscrewing the cover from the watch is much easier if it is fixed. You can fix the watch in a vise by holding the ears. To avoid scratches, it is necessary to cover the vise jaws with leather or other soft material. You don’t need to clamp it hard, just to keep the watch, otherwise you can deform the ears.
Above is a video demonstrating how to unscrew the cover from a quartz watch using tweezers.
Replacing the battery in a quartz watch
After removing the cover, you can proceed to replace the battery. This is a simple job, but requires compliance with certain rules. But before removing the battery, you need to remove the sealing gasket and remember how it stood in order to also install it back during assembly. This remark is important if the gasket is not round in cross section, but trapezoidal.
As you can see from the photo, the battery is fixed in the mechanism with the help of two clamping bars: one fixed on the right side, and movable on the left side.
To prevent the battery from falling out of the socket, the movable bar is fixed with a screw. Therefore, before moving the bar to the side, it is necessary to loosen the screw with a clock screwdriver by unscrewing it half a turn counterclockwise.
As soon as the bar releases the battery, it will rise up in the socket under the pressure of the negative voltage supply spring contact.
To remove a dead battery, as well as to install a new one, you need to use tweezers. If the tweezers are metal, then in order to avoid short circuiting of the battery terminals, it is necessary to put insulating tubes on the tweezers legs or cover them with electrical tape. If there are no tweezers, then you can use your fingers, after washing your hands well with soap and water.
After removing the battery from the socket, it is necessary to inspect the tab of the negative contact, located in the center of the bottom of the socket, for its cleanliness and contact with the watch mechanism. In this watch, the contact was coated. I had to clean it with a cloth soaked in alcohol.
Checking and choosing a button battery
The voltage at the terminals of the button battery removed from the watch, measured with a multimeter, was about 1 V at a rate of 1.55 V. The battery has clearly become unusable.
Before installing a new battery, it is advisable to check what voltage it produces. If the battery has been lying in an unheated warehouse for more than one year since the date of release, then it may well turn out to be unusable due to self-discharge. There are no devices that allow you to determine the capacity of a button cell battery. With a voltmeter, you can only determine the suitability of the battery for the operation of the clock, and how long it will work, you can only find out when the clock stops.
On the case of the battery, which is also its positive terminal, the marking of its type is always applied. Due to the fact that there is no international standard for marking button batteries, each manufacturer uses its own marking. As a result, batteries of the same size and with the same technical characteristics have a dozen items.
So, for example, the 364A alkaline (alkaline) button battery with a capacity of 20 mAh, shown in the photo, installed in this watch, can be successfully replaced by any button from the following series: SR60, SR621SW, GP364, V364, D364, RW320, LR60 and many others suitable in diameter and thickness. When going to the store for a battery, it is enough to write down the type installed in the repaired watch and the seller, in the absence of the required type, will select an analogue for you. It is desirable to save a record with the type of battery so that in the future you do not have to open the watch again.
How to choose a battery
When choosing a button watch battery, many experience difficulties due to the lack of systematic information on the technical characteristics of different types of batteries. The table will help you to easily select the type of button battery according to the designation on its case.
| Table of specifications for button and coin cell batteries for watches | |||||||
|---|---|---|---|---|---|---|---|
| Cell type (batteries) | IEC designation | Load mode (load current) | Watch mechanism | Voltage, V | Shelf life, years | Price | |
| Salt | R | universal | any | 1,5 | 1,5-2 | low | |
| Alkaline (alkaline, manganese-zinc) | LR | 2-3 | average | ||||
| Silver-zinc (oxide-silver) | SR | LD | low uniform | simple | 1,55 | 2-3 | high |
| HD | high uneven | any | |||||
| MD | universal | ||||||
| Lithium | CR | any | 3,0 | 3-7 | |||
Salt battery R cheap, suitable for any type of watch, has a short shelf life, and does not last long, especially if it has been in the warehouse for more than a year, since the self-discharge current per year is at least 10% of its capacity. In addition, a discharged salt battery is prone to leakage of electrolyte, which in a forgotten watch can lead to damage to the movement. I do not advise you to install this type of battery in your watch, except perhaps in a hopeless situation.
Alkaline - alkaline LR battery is the best choice in terms of price and quality. A fresh battery will last, depending on the complexity of the watch mechanism, at least one and a half years.
Silver-zinc battery from a number of expensive ones and has all the advantages of the above, in addition it has a very low self-discharge current. These batteries are available in three versions to optimize cost. The cheapest is the SR-LD, which is ideal for watches with a simple movement, that is, watches that have only hours, minutes and seconds hands. A watch with such a fresh battery lasts at least two years. The SR-HD battery is perfect for watches with a complex mechanism, and the SR-MD is universal and can successfully replace the SR-LD and SR-HD, but it is the most expensive. If funds allow, then this is the best choice for watches with a simple mechanism, as well as a complex one.
Lithium batteries for watches, it is produced only in the form of flat disks of different sizes and therefore there is no need to choose. The battery is expensive, has all the advantages of alkaline and silver-zinc batteries, but lasts at least three years. I happened to change a lithium battery in a watch that had lasted nine years.
Button cell interchangeability
Although there are recommendations from the International Electrotechnical Commission (IEC) for button cell labeling rules, many manufacturers prefer their own standards. Therefore, batteries of the same size and technical characteristics have more than a dozen items. To help you figure out which battery suits your needs best, see the button battery interchangeability table below.
It is worth noting that the list of button batteries given in the table is intended not only to work in hours, but also in any other devices, for example, in cameras and camcorders to save settings and the current time when charging batteries, in calculators, LED flashlights, children's toys , laser pointers and many other electronic devices.
| Table of interchangeability of button and flat batteries for watches | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| IEC | Renata, GP, Varta (V), Duracell (D), Energizer | Maxell, Sony, National, Panasonic, Toshiba | Seiko | Rayovac | IEC | Camelion, Golden power, FTY REF | Capacity, Ah | Size ∅×h, mm | Clock movement type |
| SR43 | 301 | SR43SW | SB-A8 | RW34 | LR43 | G12 | 120 | 11.6×4.2 | LD |
| SR44 | 303 | SR44SW | SB-A9 | LR44 | 175 | 11.6×5.4 | LD | ||
| SR48 | 309 | SR754SW | RW38 | LR48 | G5 | 80 | 7.9×5.4 | LD | |
| SR67 | 315 | SR716SW | SB-AT | RW316 | 19 | 7.9×1.6 | LD | ||
| SR62 | 317 | SR516SW | SB-AR | RW326 | 10 | 8.8×1.6 | LD | ||
| SR64 | 319 | SR527SW | SBAE/DE | RW328 | 21 | 5.8×2.6 | LD | ||
| SR65 | 321 | SR616SW | SBAF/DF | RW321 | 14 | 6.8×1.6 | LD | ||
| 329 | SR731SW | RW300 | 37 | 7.9×3.1 | LD | ||||
| 335 | SR512SW | SB-AB | 5 | 5.8×1.2 | LD | ||||
| 337 | SR416SW | 8 | 4.8×1.6 | LD | |||||
| 339 | SR614SW | 11 | 6.8×1.4 | LD | |||||
| 341 | SR714SW | 15 | 7.9×1.4 | LD | |||||
| SR43 | 344 | SR1136SW | RW36 | LR42 | 105 | 11.6×3.6 | LD | ||
| 346 | SR712SW | SB-DH | 10 | 7.9×1.2 | LD | ||||
| 350 | LR42 | 105 | 11.6×3.6 | HD | |||||
| SR44 | 357 | SR44W | SB-B9 | RW42 | LR44 | G13 | 190 | 11.6×5.4 | HD |
| SR58 | 361 | SR721W | LR58 | G11 | 21 | 7.9×2.1 | HD | ||
| SR58 | 362 | SR721SW | SB-AK/DK | RW310 | LR58 | G11 | 23 | 7.9×2.1 | LD |
| SR60 | 364 | SR621SW | SBAG-DG | RW320 | LR60 | G1 | 20 | 6.8×2.1 | LD |
| 365 | SR1116W | 40 | 11.6×1.6 | HD | |||||
| 366 | SR1116SW | RW318 | LR45 | 40 | 11.6×1.6 | LD | |||
| SR69 | 370 | SR920W | SB-BN | G6 | 38 | 9.5×2.1 | HD | ||
| SR69 | 371 | SR920SW | SB-AN | RW315 | G6 | 28 | 9.5×2.1 | LD | |
| SR68 | 373 | SR916SW | SBAJ-DJ | RW317 | 29 | 9.5×1.6 | LD | ||
| 376 | SR626W | 27 | 6.8×2.6 | HD | |||||
| SR66 | 377 | SR626SW | SB-AW | RW329 | G4 | 28 | 6.8×2.6 | LD | |
| SR63 | 379 | SR521SW | SBAC-DC | RW327 | G0 | 15 | 5.8×2.1 | LD | |
| 380 | SR936W | 82 | 9.5×3.6 | HD | |||||
| SR55 | 381 | SR1120SW | SBAS-DS | RW30 | LR55 | G8 | 50 | 11.6×2.1 | LD |
| SR41 | 384 | SR41SW | SBA1-D1 | RW37 | LR41 | G3 | 45 | 7.9×3.6 | LD |
| SR43 | 386 | SR43W | SB-B8 | LR43 | G12 | 130 | 11.6×4.2 | HD | |
| SR54 | 389 | SR1130W | SB-BU | LR54 | G10 | 80 | 11.6×3.1 | HD | |
| SR54 | 390 | SR1130SW | SB-AU | RW39 | LR54 | G10 | 80 | 11.6×3.1 | LD |
| SR55 | 391 | SR1120W | SB-BS/ES | LR55 | G8 | 50 | 11.6×2.1 | HD | |
| SR41 | 392 | SR41W | SB-B1 | RW47 | LR41 | G3 | 45 | 7.9×3.6 | HD |
| SR48 | 393 | SR754W | SB-B3 | LR48 | G5 | 80 | 7.9×5.41 | HD | |
| SR45 | 394 | SR936SW | SB-A4 | RW33 | LR45 | 84 | 9.5×3.6 | LD | |
| SR57 | 395 | SR927SW | SBAP-DP | RW313 | LR57 | G7 | 55 | 5.9×2.6 | LD |
| SR59 | 396 | SR726W | SB-BL | LR59 | G2 | 32 | 7.9×2.6 | HD | |
| SR59 | 397 | SR726SW | SB-AL | RW311 | LR59 | G2 | 32 | 7.9×2.6 | LD |
| SR57 | 399 | SR927W | SB-BP/EP | LR57 | G7 | 55 | 5.9×2.6 | HD | |
| Battery load mode: | HL - low uniform | HD - high uneven | |||||||
Let's look at an example of how to use the table data. For example, after removing the cover from the watch, you saw that it had a SR726SW battery. Now it is enough to find its designation in the table and any battery in the horizontal row in which the SR726SW is located will be suitable for replacement, namely: SR59, 397, SB-AL, RW311, LR59 and G2. Despite the different markings, these are all the same batteries and their main interchangeability parameter is the geometric size. But since the battery was in a watch with a simple mechanism, the range of batteries suitable for replacement is expanding significantly. Any battery from the number 396 series is perfect for replacement, since its overall dimensions are the same, and this type of battery can work in hours, both with a simple HL and a complex HD current consumption mode.
Nowadays, many people order button batteries online directly from Chinese manufacturers. To save money, the Chinese often make the blister simplified, using sticky tape instead of molded transparent plastic. When removing the battery from the blister, a sticky layer may remain on its surface. For reliable contact, before installing the battery in the watch, this layer must be removed from its surface with a rag soaked in acetone or alcohol.
How to properly close the watch case
After replacing the battery, an equally important step comes - replacing the cover.
Watch water permeability
The tightness of the watch depends on the correct installation of the cover. On the watch dial, you can find markings indicating the degree of their water resistance in conventional meters. So in Swiss watches, the number after the letters WR indicates the pressure in atmospheres that the watch can withstand. For example, WR30, WR50 or WR100. But if you immerse the watch in water in practice, then it will get inside the watch, regardless of the marking. It's more of a publicity stunt and nothing more. Watches with this marking only resist splashes of water well. So when swimming in the sea or visiting the sauna, it is still better to remove the watch from your hand. Only in watches specially produced for divers, with a number in the marking WR300 or more, you can safely dive into the water.
However, if the gasket is not installed correctly when installing the cover, the watch can be deprived of protection even against splashing water. There is nothing complicated here, you need to lubricate the gasket with silicone grease, which is sold in an aerosol package, before installing the gasket. If the watch has a wedge-shaped gasket, then install it as it was installed earlier. Lubrication is optional, but will keep the gasket from moving when the cover is closed and will make it easier to unscrew it later.
To lubricate the gasket, you need to put it on a sheet of paper and from a distance of 10-15 cm spray it with a cloud of silicone from a can for 0.5 seconds.
It would seem impractical to purchase a whole can of silicone lubricant, but such a lubricant will not be lost on the farm. Silicone grease is neutral and will not corrode materials, including rubber and plastic. It retains its properties in the temperature range from −40 to +250°C. Silicone grease can lubricate everything where it is necessary to reduce friction, protect against oxidation and water. If the key of the English lock is tight and rotates, then if you spray silicone into the well from a can, the lock will work perfectly. In winter, after lubrication, door seals will not freeze, rubbing plastic parts will not creak, and locks in your car will not freeze. Silicone is also useful for lubricating the ceramic plates of the mixer cartridge, seals and constipation of plastic windows. If it is unacceptable to spray silicone, then you can first moisten the cloth by placing it close to the sprayer, and then lubricate the desired surface. Silicone grease comes in only one type and is sold in hardware and automotive parts stores (the same, but twice as expensive) in spray cans and bottles with a volume of 50 ml or more.
Methods for snapping stubborn covers
When installing the lid, do not forget that the groove on the inside of the shoulder must be exactly above the axis of the crown, otherwise the lid will not slam shut.
Sometimes it is difficult to close the snap-on lid due to insufficient finger force. In this case, if the glass is flat, you need to put the watch with glass on a stack of newspapers and standing up, snap the lid on, pressing it simultaneously with two thumbs.
In the case of convex glass, it is necessary to cut a hole in the diameter of the glass in a piece of plywood with a thickness slightly larger than the convexity of the glass or pick up a plastic screw cap of a suitable diameter and put a watch into it, as in the photo.
If the strength of the fingers is not enough, you can use a vise. To do this, the watch must be squeezed with the jaws of a vise through two gaskets in the form of covers until a characteristic click appears. The mineral water screw on the side of the watch cover can be replaced with a gasket equal in size to the cover made of non-solid material: plywood, thick cardboard or leather. The vise can be successfully replaced with a clamp, which is often used to screw table lamps to the table top.
If there was not enough finger strength to install the watch cover, and there was no vice or clamp at hand, then you can slam the watch cover in an unusual way. To do this, you need to place the clock in a protective glass, plastic cover on the floor. Then, slowly shifting from foot to foot, press on the cover through the gasket described above with a clean heel of a shoe worn on the foot until a click appears. Since the force is applied only to the metal case of the watch, it is difficult to damage the mechanism and glass even if desired. To exclude pressure on the crown in case of possible deformation of the cover, a part of the plastic must be removed in front of the crown.
The described methods of installing stubborn watch covers were used by me in practice. You can see for yourself in their effectiveness by practicing on an abandoned old clock, there are such in every house.
As you can see, changing the battery in a watch is not at all difficult, and after reading the article, any home master will be able to cope with this task, even for the first time undertaking such work.
