Types and uses of button batteries

The types of button batteries include lithium button batteries, zinc-silver oxide, zinc-air, lithium-manganese dioxide, etc. For button battery models, you must first understand the meaning of the letters and numbers on the button battery, such as: cr2032 refers to one A 20mm diameter, 3.2mm high lithium-manganese dioxide disposable button battery. Since other button battery materials have a certain degree of pollution, while button lithium batteries are relatively environmentally friendly, button lithium batteries will be the mainstream of development in the future.

Button lithium batteries, 3V lithium button batteries are mostly used in anti-theft devices, access control, computers, etc. Some watches are also equipped with lithium batteries. The shelf life of lithium batteries is 7 years, and users generally don't have to worry about battery expiration.

The naming method of button batteries in various countries is generally: the model of silver oxide button batteries in Switzerland is 3##, and the model in Japan is usually SR##SW, or SR#W (# represents an Arabic numeral). The type of button lithium battery is usually CR####. Button batteries of different materials have different models and specifications.

Button batteries generally have two types: rechargeable and non-rechargeable. Rechargeable ones include 3.6V rechargeable lithium-ion button batteries (LIR series) and 3V rechargeable lithium-ion button batteries (ML or VL series); Rechargeable batteries include 3V lithium manganese button batteries (CR series) and 1.5V alkaline zinc manganese button batteries (LR and SR series);

In addition to being powered by a single battery, button batteries have also developed high-voltage batteries due to their small size-that is, stacking multiple button batteries. Common typical models are: 6F22 (9V), F22 (6V), 15F20 (22.5) V), 10A(9V), 11A(6V), 23A(12V), 25A(9V), 26A(6V), 27A(12), 476A(6V), 120H7D(8.4V), 2X625A(3V), etc. .

Due to the use of button batteries, the combined battery pack is small and exquisite, but the discharge intensity is not large, and it is mostly used in small motors and DC power supplies for small radio transmission. It should be noted that because high-voltage stacked batteries are mostly produced by a combination of ordinary carbon batteries, they are generally not easy to store for a long time. When purchasing, you should pay attention to the production date and try to use products produced within one year.

Let's talk about lithium batteries in button batteries, lithium-manganese dioxide disposable button batteries (CR button battery series). The nominal voltage of lithium manganese disposable button batteries is 3V, the termination voltage is 2V, and the typical operating current is 0.1-0.2mA. It uses manganese dioxide with very stable chemical properties as the cathode material, and lithium metal with very high specific energy as the anode material. The annual average capacity reduction is not more than 2%, and the storage life is long. The battery adopts a semi-sealed structure and is safe to use. Lithium-manganese disposable button batteries have a large temperature adaptation range and can work normally under the conditions of -20 to +60 degrees Celsius. It is mostly used in electronic dictionaries, motherboard CMOS batteries, watches and so on. There are also secondary rechargeable lithium button batteries, nominal 3.6V, 4V after full charge, less self-discharge, about 10% monthly average, no memory effect, but not much capacity, probably the same type of lithium manganese disposable button About 1/7 of the battery capacity.