Specifications: Diameter:14mm, height :50mm.
Applications: The most common model, widely used in small and medium-sized devices such as remote controls, flashlights, toys, and blood glucose meters. It’s the “versatile small battery” in daily life. For example, when you press a remote control, it’s often powered by an AA battery; flashlights rely on it for stable light; children’s toys keep running happily thanks to it; even blood glucose meters for health monitoring commonly use AA alkaline batteries to provide power for accurate measurements. It’s truly the “top choice” in the field of small and medium-sized devices.
Specifications: Diameter :10mm, height :44mm.
Applications: Slightly smaller than AA type, it’s suitable for low-power consumption devices. It shines in compact gadgets such as wireless mice, wireless keyboards, headphones, and small electronic instruments. When a wireless mouse glides flexibly on the desktop or a wireless keyboard types smoothly, an AAA battery often supports it silently; it’s also a “behind-the-scenes hero” for the melodious music from headphones.
Specifications: Diameter approx. 26.2mm, height approx. 50mm.
Applications: With a robust shape, it excels at supplying high-current devices. It powers emergency lights that flash with strong light in critical moments, large flashlights that emit long-distance beams for outdoor adventures, and some electric tools that require substantial power during operation, ensuring efficient performance.
D LR20 1.5V Alkaline Battery
Specifications: The “bulky” model in alkaline batteries, with a diameter of approx. 34.2mm and a height of 61.5mm.
Applications: Commonly used in high-power devices. For example, it provides instant high energy for gas stove igniters to spark flames; it’s a stable power source for large radios to broadcast clear signals; and early electric tools relied on its strong power output to complete tasks.
Specifications: Rectangular structure, 9V voltage (composed of 6 series-connected LR61 button batteries).
Applications: Plays a key role in professional devices requiring higher voltage, such as multimeters for precise circuit parameter measurement, smoke alarms for safety monitoring, wireless microphones for clear sound transmission, and electronic keyboards for playing beautiful melodies.
Other special models: