AAA batteries are one of the most popular power sources. In appearance it is a standard cylindrical battery.
A distinctive feature of such a battery is that it can be different in its type: lithium, salt, alkaline. Depending on the installed electrode, technical specifications, life and other parameters change.
Content
AAA batteries are fingerless or pinky
The AAA battery is a little finger battery. Often, the pinky and finger batteries are confused due to a similar appearance.
AA finger batteries are slightly larger. On average, the length and diameter is from 14.5 millimeters, and the length is from 50 to 50.5 millimeters. The little ones are slightly smaller in size. In particular, their diameter is on average about 10.5 millimeters, and the length does not exceed 44.5 millimeters. Weight is about 14 grams. Confused in the store, if the person is not an expert, they are quite simple.
The AAA battery has a positive electrode on the protrusion at the end of the product, while it occupies about a third of the diameter. The negative electrode is a flat or slightly embossed area at the other end of the battery.
The batteries are protected against corrosion and short circuit. In particular, for this it is provided that the device is placed in a metal or plastic case. Also protection is isolation from a cylindrical electrode (positive for alkaline and negative for salt batteries).
| Designation | AA | AAA |
|---|---|---|
| Salt marking | R6 | R03 |
| Alkaline labeling | Lr6 | LR03 |
| Marking lithium | FR6 | FR03 |
| Height mm | 50,5 | 44,5 |
| Diameter mm | 14,5 | 10,5 |
| MIN capacity, mAh | 1100 | 540 |
| MAX capacity, mAh | 3500 | 1300 |
| Voltage | 1,5 | 1,5 |
Important! Attention should be paid to the product labeling, in order to avoid then difficulties with the return or exchange of products.
Types and characteristics of AAA batteries
AAA batteries have differences. It is worth paying attention to, since the type of anode and electrode is installed, the operating time, capacity and, consequently, cost are changed.
For all little batteries, the positive electrode is a protrusion at the end of the product, while it occupies about a third of the diameter (indicated by a plus on the case). A negative electrode is a flat or slightly embossed area at the other end of the battery (indicated by a minus). The dimensions are the same for everyone, the weight will be different due to different production technologies.
Salt batteries
AAA R03 salt batteries appeared before everyone else, and still they are produced almost unchanged.
The active mass of the positive electrode consists of manganese dioxide with acetylene black, electrolyte or flake graphite. The negative electrode is made of stable zinc with the inclusion of cadmium, lead or gallium. Differences:
- low cost;
- availability and low cost of raw materials for production;
- Ease of use;
- acceptable parameters of voltage, energy intensity for most modern electrical appliances.
Salt batteries are available to consumers primarily because of their low cost. But manufacturers are gradually abandoning their release, and there are several types of arguments. Among the disadvantages of salt batteries include:
- a large degree of self-discharge;
- short service life - approximately two years;
- if there is an increase in discharge currents, then the energy intensity level is significantly reduced;
- minimal activity at lower ambient temperatures.
In connection with these characteristics, it cannot be said that salt batteries are in demand. They are not suitable for new gadgets, devices that require the constant supply of the same energy, as well as a low coefficient of self-discharge.
The battery has a standard size of 10.5 by 44.5 millimeters. Energy consumption reaches 540 mAh, which is the lowest indicator among other species.
Alkaline batteries
In AAA Alkaline Batteries LR03 a manganese-zinc battery is used. The alkaline solution acts as the electrolyte, the anode is zinc powder, and the cathode is manganese dioxide.
Alkaline little batteries are more energy intensive and can withstand lower temperatures. The specific power of such batteries reaches 150 kW. The EMF of the battery is standard - about 1.5 volts. The range of operating temperatures in comparison with salt batteries is wide - from -30 to +55 degrees. Dimensions are also standard - 10.5 by 44.5 millimeters. The energy intensity is large - from 1000 to 1100 mAh.
The benefits of alkaline batteries:
- high degree of energy intensity;
- low self-discharge coefficient;
- Ease of use.
But at the same time, alkaline batteries do not have a long service life. They also work poorly if the device for which they are intended requires an intermittent voltage (decryption can be found in the instructions).
Lithium batteries
AAA FR03 lithium batteries use lithium, a cathode as an anode, and the electrolyte can take many forms. Distinctive features:
- high duration of work;
- high price.
Lithium batteries have the highest degree of capacity - up to 1300 mAh, voltage 1.5v.
They are the most optimal, since they work with devices that require continuous power supply or jumps. But at the same time, their cost is significantly higher than others.
Can I recharge AAA batteries
AAA batteries cannot be charged; they are not rechargeable. It is possible to charge only batteries that are of exactly the same size.
Where are AAA power supplies used?
The scope of use of AAA power supplies is large-scale.
They can be found in:
- wall clock;
- mobile gadgets;
- cameras and camcorders;
- mp3 players;
- remote controls;
- children's toys.
The scope is wide enough. In their popularity, little finger batteries are second to finger batteries.
Popular manufacturers and their features
In principle, all AAA batteries are high quality and reliable. Pay attention to the firms GP, Robition, Minamoto, Duracell, Energizer, Cosmos, Varta, Panasonic, Canyon. The products of these firms have an excellent ratio of price and quality.
What to look for when choosing
The type of power source determines its characteristics. Salts are the cheapest, but they no longer show sufficiently high current characteristics.
Lithium quality and reliable, but the price difference is large. The best choice is alkaline. They have a fairly high capacity, temperature range and reasonable cost.
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