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AAA batteries: which are better, specifications, classification, instructions for use. What are AAA batteries? AAA type battery

Nowadays, batteries are the most common power sources for electronics and small appliances. The need to replace them arises quite often. In order to make the best choice when buying a new galvanic cell, you should pay attention not only to the size of the batteries and the name of the manufacturer. This article will answer the following questions: what form do these power sources come in? What are the sizes? How are galvanic cells marked and what should you pay attention to when buying so that the power source lasts a long time?

Types of batteries

The classification of batteries is carried out depending on the materials from which their active components are made: anode, cathode and electrolyte.

There are five types of modern power sources:

  • salt,
  • alkaline,
  • mercury,
  • silver,
  • lithium.

Battery types by size will be listed below. And now let's take a closer look at each of these classes of galvanic cells.

Salt batteries

Salt batteries were created in the second half of the twentieth century. They replaced the previously existing manganese-zinc power sources. The dimensions of the batteries have not changed, but the manufacturing technology of these galvanic cells has become different. Salt power supplies use an ammonium chloride solution as the electrolyte. It contains electrodes made of zinc and manganese oxide. The connection between the individual electrolytes is carried out using a salt bridge.

The main advantage of such batteries is their low cost. These galvanic batteries are the cheapest among all existing ones.

Disadvantages of salt batteries:

  • during the discharge period, the voltage decreases significantly;
  • the shelf life is small and is only 2 years;
  • by the end of the guaranteed storage period, the capacity is reduced by 30-40 percent;
  • at low temperatures, the capacitance decreases to almost zero.

Alkaline batteries

Such batteries were invented in 1964. Another name for these food sources is alkaline (from the English word alkaline, which means “alkaline” in translation).

The electrodes of such a battery are made of zinc and manganese dioxide. Potassium hydroxide acts as an electrolyte.

Today, these batteries are the most common, because they are great for most electronic devices.

Advantages of alkaline power supplies:

  • have a larger capacity in comparison with salt and, as a result, a longer service life;
  • can work at low ambient temperature;
  • have improved tightness, that is, the likelihood of leakage is reduced;
  • have a longer shelf life of 5 years;
  • have a lower self-discharge rate than salt-water batteries.

Disadvantages of Alkaline Power Sources:

  • the discharge period is characterized by a gradual decrease in the output voltage;
  • the dimensions of alkaline batteries are similar to those of saline ones, but the cost and mass of alkaline power sources are higher.

mercury batteries

In such a battery, the anode is made of zinc, the cathode is made of mercury oxide. The electrodes are separated by a separator and a diaphragm impregnated with a 40% potassium hydroxide solution. Alkali is used here as an electrolyte. Thanks to this composition, this power source can work as a battery. But during cyclic operation, the galvanic cell degrades, its capacity decreases.

Advantages of mercury batteries:

  • stable voltage;
  • high capacity and energy density;
  • the ability to work both at high and at low ambient temperatures;
  • long shelf life, which is 10 years.

Disadvantages of mercury power sources:

  • high price;
  • the possibility of hazardous exposure to mercury vapor in case of depressurization;
  • the need to establish a collection and disposal process.

Silver batteries

Silver batteries use zinc for the anode and silver oxide for the cathode. The electrolyte is sodium or potassium hydroxide.

  • voltage stability;
  • the presence of high indicators of capacity and energy density;
  • immunity to ambient temperature;
  • long service life and storage.

The disadvantage of such batteries is their high cost.

Lithium batteries

In such a battery, the cathode is made of lithium. It is separated from the anode by means of a separator and a diaphragm, which is impregnated with an organic electrolyte.

Advantages of lithium batteries:

  • constant pressure;
  • high capacity and energy density;
  • independence of energy intensity from the load current;
  • small mass;
  • long shelf life, which is up to 12 years;
  • immunity to temperature changes.

The disadvantages of lithium batteries can only be attributed to their high cost.

As stated above, food sources have different chemical compositions. The shapes and sizes of batteries also differ significantly from each other. Galvanic cells have different heights, diameters and voltages. Consider the classification of batteries in accordance with these parameters.

Depending on the voltage, height, diameter and shape, power sources can be systematized in a certain way. One of the most popular classification systems is the American one. It is shown in the figure below. This standardization is convenient, it is used in many countries.

According to the American system, power supplies are classified as follows:

Name

Height, mm

Diameter, mm

Voltage, V

In addition to the class indicated in the table, power sources also have a common name that is used by the people. For example, the size is comparable to the size of a human finger, so the “folk” name for this galvanic cell is a “finger” battery, or “two A”. But the power supply C is commonly referred to as "inch". The galvanic cell D is called a "barrel". And the dimensions of which are similar to the parameters of the smallest finger of a person, it is not for nothing that it is called "little finger", or "three A". The source was called "crown".

Also in electronics, miniature round batteries are widely used, the sizes and names of which are diverse. More information about silver pills and the classification of such power supplies is given below.

Batteries "tablets": sizes and names

Another name for a miniature round battery is a dry cell. Such power supplies consist of an anode made of silver oxide, a zinc cathode and an electrolyte. The latter is a mixture of salts, which has a pasty consistency.

Different manufacturers often assign designations to such power supplies that differ from the standard ones. Below is a classification table that lists alternative names and sizes for watch batteries.

It is these miniature silver "pills" that make the mechanisms of modern wristwatches work. When it comes time to replace the battery, you may be faced with the question, what kind of power source is suitable in this situation? For example, if the watch used element 399, you can put a miniature battery instead, which, depending on the manufacturer, may have the names V399, D399, LR57, LR57SW, LR927, LR927SW or L927E. Under such names, a “tablet” will be produced, the height of which is 2.6 millimeters and the diameter is 9.5.

Battery size is not the only parameter to consider when buying power supplies. In order to learn how to decipher information that is located on galvanic cells, you need to familiarize yourself with the basic principles of their marking.

Battery marking

The International Electrotechnical Commission (IEC) has created a specific notation system, according to which all batteries should be labeled. Information about its energy intensity, composition, size, class and voltage value should be indicated on the power source case. Using the example of the battery shown below, let's take a closer look at all the marking elements.

The information on the power supply indicates the following:

  • the electric charge of the galvanic cell is 15 A*h;
  • power source class - AA, that is, it is a "finger" battery;
  • voltage is 1.5 volts.

And what does the inscription "LR6" mean? This, in fact, is the marking, which gives information about the chemical composition and class of the power source. The types of batteries have the following letter designations:

  • saline - R;
  • alkaline - LR;
  • silver - SR;
  • lithium - CR.

Battery classes are indicated by the following numbers:

  • D - 20;
  • C - 14;
  • AA - 6;
  • AAA-03;
  • PP3 - 6/22.

Now you can decipher the LR6 marking in the above figure. The letters here indicate that this is an alkaline galvanic cell, and the number indicates the size of the “finger” battery, that is, it indicates that the power source belongs to class AA.

Scope of application and features of the choice of batteries

First of all, it should be noted that all galvanic cells meet the requirements of unification, that is, the consumer can easily replace the power source of one manufacturer with a similar battery from another. There is only one caveat: you should not use current sources manufactured by different companies or, moreover, belonging to different types in one device. This will significantly reduce battery life.

When choosing power supplies, you need to pay attention to the packaging. Often, the manufacturer indicates on it devices in which it is recommended to use these particular batteries. If this information is not provided, the tips below will help you make the right choice.

Salt batteries have a low capacity of 0.6-0.8 Ah and are used in devices with low power consumption. These can be remote controls, electronic thermometers, testers, floor or kitchen scales. Salt elements can also be used as the dimensions of such current sources are similar to the corresponding parameters of alkaline ones, but their areas of application vary significantly. After all, if you use salt batteries in devices with an electric motor, flashlights or cameras, then their service life can be only 20-30 minutes. Such galvanic cells are not designed for heavy loads.

Alkaline batteries have a fairly large capacity of 1.5-3.2 Ah. This allows them to be successfully used in devices that have increased power consumption. Such devices include digital cameras with flash, flashlights, children's toys, office phones, computer mice, etc. Batteries designed specifically for cameras give off energy faster. This has a positive effect on the speed of the cameras. If you use an alkaline power source in devices with low power consumption, then the batteries will show excellent results, their service life will be several years.

Twenty to thirty years ago, mercury batteries were widely used in devices such as pacemakers, hearing aids, military devices. To date, the use of these power sources is limited. In many countries, it is forbidden to manufacture and operate such electrochemical cells due to the fact that mercury is a toxic substance. In the case of using these current sources, it is necessary to organize their separate collection and disposal in accordance with safety requirements.

Silver batteries were not widely used due to the high cost of the metal. However, miniature power supplies of this type are widely used in watches, laptop and computer motherboards, hearing aids, musical cards, key fobs and other devices where larger batteries cannot be used.

Lithium batteries have a longer life than even the best alkaline batteries. Therefore, such power supplies are used in devices that have high power consumption. It can be computer and photographic equipment, medical equipment.

Conclusion

The battery is a product that, despite its small size, can be dangerous. You can not disassemble the power source, throw it into the fire and, of course, try to recharge. On the net you can find tips on how to give the battery a second life. Do not try to conduct such experiments, because it can be dangerous.

When buying new batteries, you should pay attention not only to the manufacturer and suitable sizes, but also to the chemical composition of the power sources. To do this, you need to be able to read the label. Properly selected batteries will last a long time and with high quality.

Rechargeable batteries are gradually replacing conventional disposable batteries in a wide variety of household devices. With a one-time purchase of a rechargeable battery pack and charger, you can save a lot of money (compared to regularly replacing standard batteries). In our review article, we will try to tell you which AAA batteries are better, as well as their scope, leading manufacturers and popular models.

Classification and dimensions

The classification of rechargeable batteries determines the exact correspondence of the size and shape of the product to its letter or alphanumeric designation (or the so-called form factor). Commonly called "little finger" batteries with a length of 44 mm and a diameter of 10 mm, according to the American standard, they are designated by three Latin letters - AAA (in the international standardization system - HR03). Accordingly, AA batteries (HR6) are used instead of disposable "finger" batteries 50 mm long and 14 mm in diameter.

Varieties

Depending on the chemical composition of the technological elements included in the technical device of the AAA battery, such products are:

  • Lithium polymer (Li-Pol). A design feature of such products is a micro-USB connector installed on the case, through which recharging is carried out using the cord included in the package. Such batteries have not yet been widely used because of their very high cost. For example, a set of two batteries (400 mAh each) Rombica Neo X3 costs about 1000 rubles. The pluses include increased voltage - 1.5 V.
  • Nickel-cadmium (Ni-Cd). These AAA rechargeable batteries have been popular for a long time. However, taking into account the highly toxic characteristics of cadmium and its derivatives, as well as the increased modern requirements for the environmental safety of humans and the environment, almost all leading manufacturers of this battery segment have abandoned their production.
  • Nickel metal hydride (Ni-MH). They are the most popular today and are perhaps the best AAA batteries. The choice of these products is very wide both in terms of manufacturers represented on the Russian market, as well as in terms of price and technical indicators. Therefore, they will be discussed in this article.

For information! Lithium-ion (Li-Ion) AA and AAA batteries are no longer produced at all.

Specifications of AAA batteries

AAA batteries are characterized by:

  • Working voltage: 1.2V.
  • Capacity: from 550 to 1100 mAh.
  • Form factor - AAA (HR03).
  • Overall dimensions: length - 44 mm, diameter - 10 mm.
  • Weight: 12-15 grams.
  • The number of full charge / discharge cycles guaranteed by the manufacturer: from 500 to 3000.
  • Uninterrupted service life: from 3 to 10 years.
  • self-discharge level.

Application area

Rechargeable batteries are used in a wide variety of devices:

  • digital cameras and flashlights;
  • video cameras;
  • voice recorders;
  • portable radios and multimedia music centers;
  • wireless game console controllers;
  • hair trimmers;
  • radiotelephones;
  • wireless mice, keyboards and headphones;
  • portable CD and MP3 players;
  • children's electromechanical toys (including radio-controlled ones);
  • miniature flashlights (on incandescent lamps or LEDs);
  • electric shavers, epilators and toothbrushes.

The choice of AAA battery capacity directly depends on the energy consumption of a particular device.

Advantages and disadvantages

The undoubted advantages of nickel-metal hydride batteries (compared to disposable batteries and rechargeable products based on Li-Pol or Ni-Cd) are:

  • Saving money (a set purchased once will last for many years).
  • The energy intensity of modern AAA batteries often exceeds that of standard batteries.
  • Modern rechargeable Ni-MH products (unlike batteries) almost do not reduce the amount of energy output even at high discharge currents.
  • These products (compared to Ni-Cd) almost completely lack the effect of the so-called memory, so you can put them on charge without waiting for a full discharge. In this case, there is no deterioration in performance.
  • Full environmental safety of the materials used in the manufacture. This allows you to operate them without causing absolutely no harm to human health, and also greatly simplifies the process of subsequent disposal.
  • Large selection of products.

The main disadvantage of such products is that manufacturers do not recommend their use at sufficiently low temperatures. Only some models (usually with the Pro index) are designed for operation at minus 20 degrees.

Leading manufacturers

The leading and most popular manufacturers of nickel-metal hydride batteries today are:

  • Japanese Panasonic, Sanyo, Sony and Maha;
  • American Duracell and Energizer;
  • German Ansmann and Varta;
  • Dutch Philips;
  • Hong Kong GP;
  • Russian Cosmos, Robiton and Zubr.

All of them have won the trust of consumers and have a good price / quality ratio.

Popular models from Panasonic

The well-known Japanese manufacturer Panasonic, the first to start producing nickel-metal hydride batteries with a low self-discharge current, remains the undisputed leader in the ratings of AA and AAA batteries.

For use in devices with the HR03 (AAA) battery form factor used, the company offers three types of “little finger” batteries.

The "younger" Eneloop Lite model today costs 210-220 rubles. Possessing a minimum (compared to more expensive products from Panasonic) capacity (550 mAh), the device allows for the maximum number of recharge cycles to date (up to 3000).

The price of a Panasonic Eneloop product with a capacity of 750 mAh is 260-270 rubles. The number of complete charge / discharge cycles guaranteed by the manufacturer is also very large - 2100.

On a note! The Panasonic AAA batteries described above retain 70 percent of their charge even after three years of storage.

The “older” Eneloop Pro model, which allows 500 full recharge cycles, today has a fairly large capacity for this type of battery (950 mAh) and costs 300-320 rubles. A distinctive feature of this product is the ability to operate at ambient temperatures down to minus 20 degrees. After a year of storage, such a battery will lose only 15 percent of its original charge.

For information! By reading the instruction manual for a specific "device", you can determine which AAA batteries are best suited for it.

An important advantage of Panasonic Eneloop batteries is that they are sold already charged and ready for immediate use (Ready To Use).

Product line from GP

AAA batteries (according to numerous buyers) from GP are very popular due to a very balanced price / quality ratio. The Hong Kong manufacturer offers the user 6 models of products of the HR03 form factor with a capacity of 650 to 1000 mAh and a cost of 85 to 150 rubles, respectively. The number of recharge cycles for all products is the same and is about 1000.

Like all leading manufacturers, GP has started producing batteries with low self-discharge current. Model GP AAA ReCyko + with a capacity of 850 mAh costs about 140 rubles. The Always Ready label on the packaging indicates that the device is already charged and intended for immediate use (without pre-charging).

Popular models from Energizer and Duracell

Both American manufacturers have long been known to Russian consumers. In their reviews, they prefer the two most popular AAA battery models: Duracell Duralock (about 200 rubles) and Energizer Extreme (260 rubles). Their technical indicators are the same: capacity 800 mAh, the number of recharge cycles - 1000. Both are sold in a charged state, which indicates their low self-discharge current. And although Duracell guarantees 5 years of trouble-free operation for its product, most likely, under the same operating conditions, Energizer will last no less. Which AAA batteries are better, only their own experience of using them, and with the same energy consumer, can finally judge. Otherwise, the comparison will turn out to be very incorrect.

The most popular AAA batteries from German manufacturers

Among the "Germans" the most famous and trusted manufacturers are Varta and Ansmann. Owners of portable equipment with high power consumption (such as flashlights) are very popular with AAA batteries from both companies with the Professional index. The cost of both models with a capacity of 1000 mAh (Varta Professional AAA and Ansmann Professional AAA) is approximately the same and amounts to 170-180 rubles. The only difference is that Varta guarantees 1500 recharge cycles, while Ansmann - only 1000. Although, in our deep conviction, this is unlikely to drastically affect the product's lifespan. With the so-called downtime (that is, not using the battery for its intended purpose) for a year, both devices retain up to 85% of their original charge.

Products of Russian manufacturers

Naturally, domestic manufacturers are also engaged in the production of the popular type of AAA batteries. Among the popular models, users note "Cosmos KOCR03" and "3ubr Dynamic Pro AAA". Both models have the maximum capacity for this form factor - 1100 mAh, and they are designed for use in devices with high power consumption. The cost is approximately the same and is about 150 rubles. The number of recharge cycles is about 1000.

The Robiton AAA Micro battery (worth 90-100 rubles) has a slightly lower capacity (900 mAh). The manufacturer positions this product as the cheapest among analogues without memory effect and with a low self-discharge current.

Charging device

As the best charger for AA and AAA batteries, battery manufacturers naturally recommend their own brand devices. That is, everything is simple, I bought, for example, a Panasonic Eneloop kit, buy a Panasonic Basic Charger BQ-CC51E for 1200-1300 rubles. Such a device will allow you to simultaneously charge 2 or 4 products. Approximate charging time is 8-10 hours (although this will largely depend on how badly the batteries have been drained).

For comparison: the universal (AA or AAA) Robiton Smart S100, also designed for simultaneous charging of 2 or 4 batteries, costs 900-950 rubles. The built-in processor monitors the change in voltage and other electrical parameters and automatically turns off the device at the end of the charging process. Charging time varies from 1.5 to 6 hours depending on the capacity of the batteries. The delivery set includes a power adapter and a power supply for connecting to the car's cigarette lighter (this greatly expands the functionality of the product).

Which of the above devices of the middle price category from fairly well-known manufacturers will be the best charger for AA and AAA batteries. It would seem that everything is simple: Robiton is cheaper and charges faster, Panasonic is more expensive and slower. However, electronics gurus unequivocally state that the higher the charging speed (and hence its current), the shorter the battery life and vice versa. Currently, the cost of nickel-metal hydride batteries is not that high, so some users will not want to achieve their maximum life (5-10 years) for the sake of saving their own time.

The most advanced can purchase a high-tech microprocessor with the ability to manually set modes and monitor process steps (voltage, current and capacitance level) on a multifunctional liquid crystal screen. A popular device with such capabilities Robiton Master Charger Pro LCD today costs about 3400 rubles.

For information! Almost all modern chargers are equipped with a protection device against the so-called polarity reversal. If you accidentally insert the battery incorrectly (i.e. mix up "+" and "-"), then this will not lead to failure of either the charger itself or the battery.

What to look for when choosing

When choosing batteries, you should pay attention to several main aspects:

  • First of all, it is capacity. The larger it is, the longer your device will naturally work before the next recharging. However, the recovery process of high-capacity products will take longer.
  • If you use the device (with batteries installed in it) often enough, you can safely purchase standard batteries. But if you turn on the device from time to time, then buy products with a low self-discharge current. Then, after taking out a flash from the shelf in six months, you can be completely sure of its performance. Ordinary rechargeable batteries will be discharged to zero in such a period.
  • The number of recharge cycles is mainly of concern to very zealous owners. Even with the minimum value of this indicator (500) and very intensive use (recharging every 2 days), the most budget batteries from GP will last at least a year and a half.

Important! You can not save too much on the charger, as this leads to a decrease in battery life. It is best to purchase products with an automatic shutdown function from trusted manufacturers.

The final conclusion, which AAA batteries are best for your CD player or your beloved child's radio-controlled car, will help you to carefully read the operating instructions (which often indicate the recommended capacity) and consult an experienced sales assistant in a specialized store.

The technologies of the modern world are striving for minimization and the absence of wires. This leads to the fact that recently there are more and more various devices and devices that are powered by AAA batteries. Such devices are in the house of almost each of us. These are wireless mice, razors, TV and DVD remote controls, pocket voice recorders, audio players, etc.

Because of their small size, "AAA" batteries are often referred to as "little finger" or "mini finger" batteries. The following designations may also be used to label these types of batteries: LR3, R3, LR03 (IEC) and R03. When choosing for your gadget, you must first of all pay attention to the type of electrolyte used, since the capacity, duration of operation and the possibility of recharging depend on this.

Depending on their composition, conventional AAA batteries are divided into saline, alkaline (alkaline) and lithium.

Those that use saline electrolyte are designed for low load and are used, as a rule, in watches, electronic thermometers and remote controls. They are the cheapest and most durable. They can be distinguished from another type by the absence of the prefix L in the marking, for example R3, R6, and low cost (as mentioned above).

Alkaline (alkaline) batteries "AAA" occupy an intermediate place. They use potassium hydroxide as an electrolyte and this is the main difference from salt cells. Chemical reactions in such sources occur at a faster rate. This contributes to a better return of current. They last longer and are suitable for equipment with an average level of energy consumption: audio players, PDAs, radios, etc. They can be distinguished from another species by the word "alkaline" and the presence of the letter L in the marking.

The best are considered lithium batteries "AAA" type. They have the shortest and longest lifespan. It is advantageous to use them in devices with intensive energy consumption: toys, LED lights, etc.

If the device is used often enough, then AAA type rechargeable batteries will be an excellent alternative to "mini-finger" alkaline and lithium cells. With the help of a charger, such sources can be recharged on average about a thousand times. The capacity of rechargeable batteries is usually specified in ampere-hours. The following types of such elements are currently widespread:

  • Li-pol (lithium polymer);
  • Li-pol (lithium-ion);
  • NiMH (nickel metal hydride);
  • NiCd (nickel-cadmium).

Each of them has its own characteristic features. So, NiMH batteries are very sensitive to overcharging, and lithium also depends on voltage and temperature. Sources such as NiMH and NiCd have a so-called "memory effect", which consists in a decrease in capacity when charging an incompletely discharged battery. In addition, these two types are characterized by noticeable self-discharge, that is, the loss of charge even in the event of idle time when the device is turned off. Although cadmium batteries have low energy intensity, they withstand frost well and are able to withstand even

Therefore, the choice of an "AAA" type power supply depends entirely on the device in which it will be used and the conditions of future work. Also, when buying an item, you need to pay attention to the brand and expiration date.

It is difficult to imagine the life of a person of this century without such familiar things as flashlights, TV remote controls, radios, alarm clocks and other equally important household items, the “life activity” of which is provided by batteries. In other words, things that do not require mandatory inclusion in the network for normal operation are powered by batteries.

The work of the product lies in its design, which consists of a metal case, inside of which there is a container with electrolyte. It gives the continuous movement of electrons and ions from one electrode to another - this forms a current. Over a certain period of time, the electrolyte in the battery loses the ability to produce the necessary current, as a result of which, as the people say, it “sits down”.

Products that belong to the AA standard have the following dimensions: diameter within 13 - 15 mm and length 60 mm. In everyday life they are called "finger". This type of galvanic batteries is incredibly common around the world. Their release began at the beginning of the last century - in 1907.

This type of battery has a clear cylindrical shape, the body of which is made of high-strength metal and has a protective insulated shell. The terminals are located on the end sides of the battery. The diameter of the first is 5 mm, but the height is about 1 mm. The next one is completely smooth and flat, and also includes a contact pad with a stunning diameter of 8 mm. Weight can vary widely. They are saline and alkaline.

saline (ca. 14 - 18 g) is much lighter than alkaline ( 22 - 24 g). Among other things, the type of electrolyte affects the overall capacity of the battery. The indicator for alkaline is approximately 2900 mAh, almost as much as the nickel-metal hydride batteries (3000 mAh). Salt elements have a normal capacity - 1500 mAh.

Salt ones are the cheapest and most affordable option, while alkaline ones have an average cost, and are also great for use at incredibly cold temperatures. When discharging, the lowest value of the total resistance is retained. They are widely distributed and produced in all countries.

AA batteries are the best type of batteries that are great for devices and devices with uniform energy consumption (children's toys, flashlights). They can also work remarkably well in devices with pulsed power consumption.

This type of battery has the following dimensions: length 44.6 mm, and the diameter is within 10.5mm. Weight fluctuates in the figure of 12 g. They are colloquially called "little fingers". The voltage of this battery is 1.5 V. Batteries identical to their format are 1.25 V. The useful life of salt batteries reaches about 540 mAh. Capacity productive alkaline - 1200 mAh, nickel-metal hydride batteries - 1250 mAh.

This type of galvanic battery is usually used in all kinds of electronic devices of small size that consume a small current, for example, TV remote controls, portable digital audio players, portable radios, cameras, all kinds of wireless devices.

AAA batteries will be able to perfectly show their abilities in devices with an impulsive load (digital cameras).

What do AA and AAA batteries have in common?

Among the common features of these two considered types of batteries is that they have exactly the same voltage., which is about 1 V. In addition, the same types of electrolytes are used for their construction.

Both types of batteries have an excellent price / quality / operating time ratio, as well as confident long-term productive work in suitable types of devices.

What are the differences between AA and AAA batteries?

First of all, it is difficult not to notice external differences, especially in size. AAs are larger than miniature AAAs. The fact that AA is larger indicates their higher capacity. Finger batteries are more common everywhere than little fingers. Each type of battery is designed for certain devices. A finger battery can freely power the same device for much longer than a miniature little finger battery, unless, of course, the design of the electronic device power compartment allows, which is perhaps quite rare.

Thanks to modern technology, the need for wires is becoming less and less. From now on, AAA batteries are used to make the device work. They are also called "little fingers" because of their small size. They are in every home and ensure the smooth functioning of a computer mouse, a shaving machine.

AAA batteries

Manufacturers produce batteries with the following characteristics:

  • length 44.6 mm;
  • diameter -10.5 mm;
  • weight is 12 g;
  • battery voltage - 1.5 V;
  • the format of the batteries that correspond to them is 1.25 V;
  • The capacity of batteries depends on their type. For saline it is 540 mAh, for alkaline - 1200 mAh, nickel-metal hydride - up to 1250 mAh.

AAA batteries - which are better?

Users, thinking about purchasing, are wondering: AAA batteries - which are better? When buying, you need to study the characteristic features of each type:

  1. Salt- designed for low load, marked with the letter L in the marking. Common devices to which they are suitable are watches, electronic thermometers, remote controls. Batteries of this type are the lowest in price, but also less durable.
  2. alkaline- are average in price and service life. In this case, potassium hydroxide acts as an electrolyte, which is why the chemical reaction proceeds faster, and therefore the current output is better. They are purchased for audio players, PDAs and radios. The identification mark is the word "alkaline".
  3. - are placed first. They are more durable and have less resistance. They are purchased for toys that simply burn a large amount of electricity.

When the device is used daily and for a long time, it makes sense to use AAA rechargeable batteries. Their attractiveness is due to the fact that with the help of a charger they can be recharged several times. Several types are available:

  • some do not tolerate reloading;
  • others are sensitive to temperature during use;
  • others are not recommended to be charged unless a complete discharge has occurred.

The choice is made based on the type of device, conditions of use, the brand and expiration date are important.

AA and AAA batteries - the difference

Understanding the huge assortment is not easy at first. First of all, they study AA and AAA batteries - the difference is in size. AA batteries are much larger than AAA batteries. At almost the same voltage, they have more capacitance. At the same time, the same electrolyte is included in their composition.

Those who are familiar with batteries from the user's perspective may not even know what AAA means on a battery. In this way, its size is indicated. In addition to this marking, there is a second one, which can also be found - this is the designation R03, which also confirms that it belongs to the "little fingers".

Having studied all the necessary characteristics, you can make your choice, taking into account the characteristics of a particular type of battery. To do this, you need to decide on which device you plan to use it for.