With the popularization of smart TVs and Internet set-top boxes, Dongzan Lithium Energy and everyone found that the controller is also slim and compact, and the battery inside has changed from the previous AA or AA battery to a 3V button battery. Through observation Note that there are some types of batteries, such as CR2025 and CR2032. The CMOS batteries on desktop motherboards are one of these two models.

Let’s first look at the differences between the two common types of button batteries. The rated voltage of the two types of batteries, CR2032 and CR2025, is the same at 3V. The difference is the battery specifications and capacity. The capacity of CR2032 is 210 mAh. When the volume of CR2025 is 150 mAh, the thickness of CR2032 is 3.2mm, and the thickness of CR2025 is 2.5mm.

Take CR2025 as an example to describe the meaning of the battery model specification code. c represents an organic chemical battery with lithium metal as the negative stage and manganese oxide as the positive stage. r represents the cylindrical shape of the battery. The first two large numbers 20 represent the diameter of the battery. is 20mm, and the last two large numbers 25 represent that the thickness of the battery is 2.5mm.

In addition to these two types of batteries commonly found in smart TVs and Internet set-top boxes, this type of battery is also used in mobile phone Bluetooth connection operations with a large number of batteries. Generally, the two types of batteries can be replaced if the capacity allows. There are also button batteries.

For these button batteries, the thickness of 1.6 is probably too thick. There are many model specifications that are not consistent. You can check the relative specifications and capacities of different models. LR and AG series button batteries are 1.5V Button alkaline manganese battery.

In addition to RV series batteries and AG series batteries, they are also batteries of the LIR series. The first two digits of the battery code, LR, represent the mercury rated voltage of 1.5V, SR represents the mercury voltage of 1.55V, and CR represents 3V. Lithium voltage, ZA represents the zinc-air voltage of 1.4V, and LIR represents the secondary lithium voltage of 3.7V (which can recharge the battery).

In this way, when you understand the above knowledge and see the similar button cells, you can understand its meaning. How to choose and replace it is not difficult. Has this concise popular science reading improved your knowledge?