On the back of the battery you can see the corresponding markings LR---alkaline---1.5VSR---silver oxide--1.55VCR---lithium battery-- 3VZA---zinc air--1.4 VLIR-- -Secondary lithium battery--3.7V Among them, the button battery marked LIR can be recharged, and the rest cannot be recharged!
There are two common types: rechargeable and non-rechargeable. Rechargeable batteries include 3.6V rechargeable lithium-ion button cells (LIR series) and 3V rechargeable lithium-ion button cells (ML or VL). series ); non-rechargeable batteries include 3V lithium manganese button cells (CR series) and 1.5V alkaline zinc manganese button cells (LR and SR series).
Typically, the code name for coin cell batteries will have R, followed by a number. Some of these numbers directly represent the diameter and thickness of the battery, such as CR3032 for lithium battery buttons, which refers to a diameter of30 mm and a thickness of 32 mm. Some of these numbers are special codes for diameter and thickness, such as LR41. , which refers to an alkaline battery - 7.9mm in diameter and 3.6mm in thickness, SR43, refers to a silver oxide battery --- diameter 11.6mm, thickness 4, 2mm.
The picture below shows several common button batteries:
Detailed information:
Classification of button batteries
< p >1. Lithium batteryThe common disposable lithium battery is a lithium manganese battery (C code), with a rated voltage of 3V.
Another type of disposable lithium battery , less common, is the lithium fluorocarbon battery (code B), with a nominal voltage of 3V.
In addition, there is another commonly used secondary lithium battery, the ML lithium battery (code name ML), with a nominal voltage of 3 V.
Lithium battery size numbers generally userally the new IEC numbering method. The first two numbers are the diameter (unit: mm), the last two numbers are the thickness (unit: 0.1 mm), and the nearest number. is taken.
3. Silver Oxide
This button battery has the characteristics of long life and large capacity. It is widely used and has the largest application volume. This type of battery uses silver oxide as the positive electrode, zinc metal powder as the negative electrode, and the electrolyte is potassium hydroxide or sodium hydroxide. Electrical energy is generated by the chemical interaction of zinc and silver oxide.
The thickness (height) of silver oxide coin cell batteries is available in five specifications: 5.4mm, 4.2mm, 3.6mm, 2.6mm and 2 .1 mm, and its diameters are available in four specifications: 11.6 mm. , 9.5mm, 7.9mm and 6.8mm.
When choosing, you mustchoose one based on the size of its location. Its commonly used models include AG1, AG2, AG3, AG1O, AG13, SR626, etc. The AG model is the Japanese standard and the SR is the international standard model.
4. Silver peroxide
The structure of this battery is basically the same as that of a silver oxide button cell. The main difference lies in the anode (absorbing electrode) of the battery. is used.Made from silver peroxide.
5. Alkaline manganese
This battery has large capacity and excellent low temperature performance. The materials used are cheap and inexpensive, and it can meet the requirements of continuous discharge. major currents.
The disadvantage is that the energy density is not sufficient and the discharge voltage is not stable enough. The positive electrode of the alkaline manganese button cell is manganese dioxide, the negative electrode is zinc, and theThe electrolyte is potassium hydroxide. Its nominal voltage is 1.5 V.
6. Mercury
Also known as mercury battery, it has the characteristics of being able to be used under high temperature conditions, capable of long-term storage, stable discharge voltage and good mechanical properties. But its low temperature characteristics are not good. The positive electrode of this battery is mercury, the negative electrode is zinc, and the electrolyte can be potassium hydroxide or sodium hydroxide. Its nominal voltage is 1.35V.
7. Lithium-ion
The rated voltage of the disposable lithium manganese coin cell battery is 3V, the termination voltage is 2V, and the typical operating current is 0.1-0.2 my. It uses manganese dioxide with very stable chemical properties as the positive electrode material and lithium metal with very high specific energyas a negative electrode material.
The average annual reduction in capacity does not exceed 2% and the storage life is long. The battery adopts a semi-sealed structure and is safe to use. Disposable lithium manganese button batteries have a wide temperature adaptability range and can work normally under conditions of -20 to +60 degrees Celsius.
It is mainly used in electronic dictionaries, motherboard CMOS batteries, watches, etc.
8. Secondary Lithium
This is a secondary button cell and a button cell that can be charged and discharged many times; rated voltage: 3.7V; charging voltage 4.2V; >
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The corresponding mark is visible on the back of the battery
LR---alkaline--1.5V
SR---oxide silver --1.55V
CR---lithium battery--3V
ZA---zinc air--1.4V
LIR- --secondary lithium Battery - 3.7V
9. Hammer button
ThisThe battery has the characteristics of high energy density, good storage performance, low self-discharge and long service life. The downside is that the internal resistance of the battery is high. The positive electrode of the battery is made of manganese dioxide or iron disulfide as raw material, the negative electrode is a hammer, and the electrolyte is organic material.
The rated voltage of Li/MnO type hammer battery is 2.8V and the rated voltage of Li(CF)n type hammer battery is 3V.
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10. Battery with soldered pins
Battery with soldered pins, also known as battery with pins or battery with pins, is called battery with soldered battery in English; called pin battery in Taiwan and Hong Kong. This is a pin battery.
Usually, small electronic devices, digital products, equipmentmedical applications, etc., button batteries used for energy storage must be soldered on the printed circuit board (PCBA). The battery cells are made of stainless steel with nickel plating: the steel strip has hardness. Not easy to fold.
Nickel plating can be firmly attached to the tin on electronic components is not easy to fall off. It is not possible to weld the battery and the steel strip directly. The solder is not strong, it falls off easily, and the contact area is small.
Reference materials:
Baidu encyclopedia button battery