Elements of power for various devices are selected not in appearance - very important here is the internal "filling". Everyone who wants to acquire a quality product and at the same time to save, you need a basic knowledge of the types of batteries and an understanding of their differences.
Where are the batteries used?
The field of application of various galvanic cells is extensive. Here is an incomplete list of devices where they are needed. They are used in:
- remote controls;
- wall and wristwatches;
- photographic equipment;
- radio;
- children's music and glowing toys;
- electric razors;
- music players;
- flashlights;
- electronic notebooks;
- hearing aids;
- tonometers.
There are such novelties as a battery with a USB output for direct charging of a gadget or a battery that adapts to two sizes - AA and AAA.
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What are the types of batteries?
Buying for the first time the battery for your device is easy to make mistakes. After all, it is not for everyone to determine the exact size by the eye. Therefore, it is better to take with you to the store the same remote control from the TV or camera, so that the seller-consultant directly picked up the desired electroplating parameters.
By type (size), the batteries are divided into:
- AA;
- AAA;
- AAAA;
- A23;
- C;
- D;
- 333b;
- PP3.
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The most common size is AA and AAA, C. The rest are used much less often. Carefully looking at the inscription on each, you can see the marking in Latin letters. It means the following:
- R is saline . It was first produced in the early twentieth century and is still successfully used in various devices. The main advantage of such galvanic elements is low price. Buyers of such products should know that low cost is directly related to quality. Salt cells have a short service life and often need to be replaced. They are suitable for devices with low power consumption - up to 10 mA.
- LR - alkaline (alkaline) . This variety is marked with an inscription on the body ALKALAINE, which in plain language means longer work than for salt predecessors. These batteries can withstand high minus temperatures and have an extended shelf life of up to 5 years.
- CR - lithium . These "long-playing" batteries can be recognized by the inscription on the body - LITHIUM. The shelf life is 15 years. Duration of work, increased endurance at low temperatures, makes them leaders in this area, although it raises the price compared to alkaline more than 4 times.
- SR - silver . This species is widely used in such devices as watches, children's toys and has a long life. Unlike obsolete mercury batteries, with which silver has a great similarity, the latter do not pose a threat to human health.
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Types of finger batteries
To people far from chemistry and physics it seems that all the batteries are the same, but those who know the customers have long ago chosen the rechargeable batteries for themselves. What is their advantage over salt, lithium or alkaline? It's all about longevity, because the very word "battery" provides the ability to accumulate energy and the ability to recharge. Externally, the first and second do not differ from each other and are easily confused. That's why you should carefully read the markings. Rechargeable batteries are of two types:
- lithium-ion (Li-ion);
- nickel-metal hydride ( Ni-MH ).
They can be referred to as AAA and AA batteries. The first have received the national name micropalchic or mizinchikovye for the tiny size. Both of them are both disposable and reusable and fueled by a special charger.
Buying batteries, you need to be confident in buying a quality product. It is advisable to make sure that the shelf life has not gone out, to purchase batteries in stores where the air temperature is stable, and to refrain from buying in spontaneous markets or in kiosks. The saying "We are not so rich to buy cheap things" is very relevant for this topic. The cheaper the battery, the less it will last.