What batteries are suitable for portable calculators?
What batteries are suitable for portable calculators?
The button battery in the calculator is used as either the main or backup power source to ensure stable operation under various lighting conditions, as well as to maintain important memory data and settings. Its small size, reliability and long life make it ideal for portable calculators.
Button batteries used in calculators play a vital role. Their applications are mainly reflected in the following areas:
Mains power (for non-solar calculators)
Button batteries are the only source of power for calculators that do not have a solar panel or cannot provide sufficient power, especially indoors or in low-light environments.
It supplies a stable and continuous power supply to all of the calculator's electronic components (CPU, display, etc.), ensuring that the calculator operates normally.
Backup power supply (for calculators with solar cells)
Most modern scientific and basic calculators are equipped with both a solar panel and a button battery.
In an environment with sufficient light, the solar panel is the main power source. In environments with insufficient light, such as indoors or at night, or when the panel is blocked, the button battery automatically takes over as a backup power source. This ensures that the calculator will not lose memory data, such as stored formulas, settings or calculation results, due to changes in light.
Maintaining Memory
The tiny current supplied by the coin cell battery is used to keep the volatile memory and real-time clock operational even when the computer is switched off.
Common Models
CR2032: Most commonly used, 20mm diameter, 3.2mm thickness, 220mAh capacity. Used more often.
CR2025: 20mm diameter, 2.5mm thickness, 150mAh capacity. Used when the internal space of the calculator is thinner.
CR2016: 20mm diameter, 1.6mm thickness, 80mAh capacity. Used less often.
Advantages of Power Glory's button batteries in calculator applications:
Small size: Very suitable for the design of limited internal space of the calculator.
Stable voltage: Lithium manganese battery provides a stable 3V voltage, which meets the needs of the calculator circuit.
Smooth discharge: The voltage drops relatively slowly throughout its entire service life.
High energy density: It can store relatively more electrical energy in a small volume.
Low self-discharge rate: Even if it is not used for a long time, the battery itself loses power slowly and has a long service life.
Wide operating temperature range: It can work normally in a wide range of ambient temperatures.
Mercury-free and environmentally friendly: It does not contain mercury, which is more environmentally friendly to use.
