Characteristics of Lithium Manganese Battery
2021 Dec 15 By admin 0 comment

1. Features of Lithium Manganese Battery
1) Advantages of lithium manganese battery
(1) The output voltage of a single-cell lithium manganese battery is high, and the rated voltage is 3V.
(2) The storage temperature of lithium manganese batteries is wide, ranging from -45°C to +75°C. Of course, storage under refrigerated conditions will have better results. Its high and low temperature performance is good, and it can work normally under the condition of -20℃~+55℃.
(3) The specific energy of lithium-manganese batteries is high, several times that of ordinary zinc-manganese batteries. Only the button-type lithium manganese battery has a capacity of 1200mA·h. A lithium manganese battery designed into a cylindrical shape has a higher capacity.
(4) The self-discharge rate of lithium manganese batteries is low, and the capacity loss is less than 10% after 5 years of storage. It is the lowest self-discharge rate among common types of dry batteries.
(5) Good leak-proof performance.
(6) Flat discharge characteristic curve.
(7) Lithium manganese batteries can be designed to be light, thin, short, small, and high-capacity batteries of various shapes to adapt to the use of different electronic products.
(8) Generally cylindrical lithium manganese batteries have low internal resistance and large capacity, and can be used for short-time high-current discharge. They are an excellent product for cameras.

Characteristics of Lithium Manganese Battery
Lithium Manganese Battery

2) Disadvantages of lithium manganese batteries
(1) The button-type lithium manganese battery has a high internal resistance and is only suitable for low-current discharge.
(2) The safety of lithium manganese batteries is poor and there is a danger of explosion. Therefore, the safety requirements for the production, inspection, storage, and use of lithium manganese batteries are relatively high, and there are special indicators in the national standards to investigate its safety performance. Manufacturers generally carry out production and inspection in strict accordance with the requirements, and users must strictly follow the manufacturer’s instructions for use.

2. performance of lithium manganese battery
1) General characteristics of lithium manganese batteries
(1) The single-cell voltage of lithium-manganese batteries is relatively high, with a rated voltage of 3V, which is twice the voltage of a single-cell zinc-manganese battery.
(2) The discharge voltage of the lithium manganese battery is stable, and the final discharge voltage is 2V.
(3) The specific capacity of lithium manganese batteries is large, so when the volume is the same, the capacity of lithium manganese batteries is much larger than that of other dry batteries.
(4) Low self-discharge rate, annual self-discharge ≤1%. Therefore, it has better storage performance. Fully sealed batteries have a storage life of 10 years, and semi-sealed batteries generally have a storage life of 5 years.
(5) The working temperature range is wide, and it can be used normally within the temperature range of -20℃+55℃.

2) Characteristics of CR123A cylindrical lithium manganese battery
The appearance of CR123A lithium manganese battery is shown in Figure 1(b), which is cylindrical. Its international model is CR17340, and they have the same performance.

Characteristics of Lithium Manganese Battery
Figure 1 Graphic of Lithium Manganese Battery

CR123A battery not only has the common characteristics of the lithium manganese battery described above, but also has the following characteristic parameters. The diameter and height of the external dimensions are φ17mm×34mm, the rated capacity is 1300mA·h, and the rated voltage is 3V. It is widely used in cameras and camcorders.
In addition, because CR123A is a primary lithium manganese battery, there is also a special mark on the exterior of the product package with the words “No charging”, emphasizing that this kind of lithium manganese battery is not rechargeable. If it is charged forcibly, it may cause the metal shell to explode. The charger was blown to pieces, even threatening the life of users. The BR-2/3A battery as shown in Figure 2 belongs to this type of lithium manganese battery. The words “DO NOT CHARGE” can be seen on the outside, and we must strictly abide by it.

Characteristics of Lithium Manganese Battery
Figure 2 BR-2/3A lithium manganese battery

3) Characteristics of CR2025A button lithium manganese battery
The shape of CR2025A lithium manganese battery is shown in Figure 1 (a), which is a button type lithium manganese battery. Its dimensions are φ20mm×2.5mm, rated voltage is 3V, and rated capacity is 160mA·h.
Although CR2025A is a model of primary lithium manganese battery, it is made of lithium manganese composite oxide that has been specially lithiated, so it has good charging and discharging characteristics and stability, and it can be charged and used repeatedly. The cycles of charging and discharging with 1mA current can reach 1500 times; the cycles of charging and discharging with 4mA current can reach 400 times. The lithium manganese battery also has the characteristics of short-time high-current discharge.
The capacity of CR2025A lithium manganese battery is twice that of the same specification lithium manganese battery in Japan. Because the negative electrode of this type of lithium manganese battery uses lithium aluminum alloy, it is larger in size, but has a slightly longer life.
In general, CR2025A lithium-manganese battery has the characteristics of small size, small quality, high voltage, large capacity, and comprehensive performance close to the international level, so it is widely used. For example, it has applications in computers, voice electronic toys, multimeters, flashlights, door and window anti-theft sensor alarms, various remote controls, card-type voice machines, and various clocks and other electrical appliances.
The charging voltage of this kind of lithium manganese battery must not be higher than 3.5V, the charging current can be selected between 0.1mA and 1mA, and the low current provided by the circuit can be accepted for long-term floating charging, which is beneficial to prolong the service life. CR2025A lithium-manganese batteries are mostly used for the power supply of the CMOS circuit of the computer motherboard, and provide long-term external power supply. When the computer is turned on, it receives floating charge for a long time.
The above shows that cylindrical lithium manganese batteries are not rechargeable, while some lithium manganese button batteries can be recharged.

4) Characteristics of CR2016 button lithium manganese battery
In the CR2016 model of button lithium manganese battery, CR represents the International (IEC) model of button lithium manganese battery, 20 represents the diameter of the battery is 20mm, and 16 represents the thickness of the battery is 1.6mm. Its rated voltage is 3V, and its rated capacity is 75mA·h.
The battery is commonly used in electronic products such as computer motherboards, memory cards, mobile phones, Bluetooth wireless products, remote controls, calculators, electric toys, micro-radio instruments, alarm systems, medical equipment, etc.

Pay attention to when using:
①Connect the positive and negative poles of the battery correctly and never make a mistake.
②Do not use different types of lithium manganese batteries in series or parallel. ③Do not directly weld the lead wire to the lithium manganese battery to prevent high temperature explosion. ④Avoid storing lithium manganese batteries in light, high temperature, and high humidity environments.
The above are also common to all lithium-manganese battery application considerations.