2025 button cell battery

The 2025 button cell battery is a small round battery widely used in various small electronic devices. This type of battery is favored for its small size and stable performance, and is often used in watches, calculators, hearing aids, toys, medical equipment, etc. The specific dimensions of the 2025 model are 20 mm in diameter and 2.5 mm in thickness.
Main features of 2025 button cell battery

Size and capacity:
Size: 20mm in diameter and 2.5mm in thickness.
Capacity: The specific capacity depends on the manufacturer and battery type, but the common 2025 battery capacity ranges from about 100mAh to 150mAh. Due to its small size, the capacity is relatively limited.

Voltage:
The nominal voltage is generally 3V (for lithium manganese batteries). This high voltage makes them very suitable for small devices with low power consumption.

Chemical composition:
Common 2025 battery types include:
CR2025: Based on lithium manganese dioxide (Li-MnO2), it provides a nominal voltage of 3V, has a long shelf life and high energy density.
BR2025: uses silver oxide as the positive electrode material, also provides 3V voltage, suitable for some specific applications.
LR2025: Alkaline battery, provides 1.5V voltage, has lower capacity, and is generally used in devices that do not require high voltage.

Cycle life: Button batteries are usually non-rechargeable disposable batteries, so the discussion is about service life rather than cycle life. High-quality 2025 batteries can provide months to years of use under appropriate conditions, depending on the power consumption of the device.

Safety: Modern button battery designs have good safety characteristics, reducing the risk of leakage and short circuits. However, due to their small size, there is a risk of being swallowed by children, so they should be properly stored and away from children.

Shape flexibility: Despite the fixed size, the compact design of button batteries makes it easy to integrate into various small devices without taking up too much space.

Application areas

Watches: Many quartz watches use 2025 batteries as a power source.
Calculators: This type of battery is commonly used in portable calculators.
Hearing aids: Some models of hearing aids may use 2025 batteries.
Remote controls: Small remote controls such as garage door openers and car keys.
Toys and games: Especially those that require lightweight and miniaturized designs.
Medical equipment: Portable medical devices such as blood glucose meters and pulse oximeters.

Usage recommendations

Choose a reliable brand: Try to choose batteries from well-known brands when purchasing to ensure performance and safety.
Follow the correct replacement method: Replace the battery correctly according to the instructions in the device manual to avoid damaging the device or causing a short circuit.
Pay attention to the storage environment: It should be stored in a dry and cool place, avoiding high temperature and high humidity environments to avoid affecting battery performance.
Check the battery status regularly: Even if the device is not used frequently, the battery power should be checked regularly and replaced as needed to prevent leakage from damaging the device.
Dispose of used batteries properly: Dispose of used batteries properly in accordance with local regulations to avoid environmental pollution.

Alternative options

If you need a battery with different specifications or characteristics, you can consider the following common alternatives:

CR2032: Slightly thicker (3.2mm), but with higher capacity, suitable for applications that require longer battery life.
CR1632: Smaller size (16mm diameter, 3.2mm thickness), suitable for applications with stricter space requirements.
Other types of button batteries: such as LR1154 (AG13), SR44, etc. These batteries have different voltages and capacities and are suitable for different application scenarios.

Notes

Match device requirements: Make sure the selected battery is fully compatible with the device, especially in terms of voltage and physical size.
Mixing risks: Do not mix new and old batteries or different types of batteries (such as lithium manganese and alkaline) to avoid device damage or safety hazards.
Protect child safety: Because button batteries are small in size and can be easily swallowed by children, they should be properly stored and children should be educated not to touch these batteries.

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