AG Button Battery Vs CR Button Battery: Which One Is Your Best Choice?

AG button battery vs CR button battery: Which one is your best choice?

As electronic devices become increasingly miniaturized, button batteries have become the "energy heart" of many electronic products with their small size and stable performance. Among the many button battery models, AG and CR series are particularly common. They look similar, but each has its own advantages. So, how should we choose between AG button batteries and CR button batteries?

1. Revealing the meaning behind the models

AG and CR are not simple brand names, but battery model standards established by the International Electrotechnical Commission (IEC), representing different chemical systems:

AG battery: Usually refers to silver-zinc battery with a nominal voltage of 1.55V. Its positive electrode material is silver oxide, its negative electrode material is zinc, and its electrolyte is an alkaline solution. AG batteries are known for their stable voltage output and high energy density.

CR battery: Usually refers to lithium-manganese battery with a nominal voltage of 3V. Its positive electrode material is manganese dioxide, its negative electrode material is lithium, and its electrolyte is an organic electrolyte. CR batteries have higher operating voltage and longer service life.

2. Performance comparison: AG vs CR, which one is better?

In order to understand the difference between AG and CR batteries more intuitively, we compare them from the following aspects:

Characteristics AG battery CR battery

Nominal voltage 1.55V 3V

Energy density High High

Self-discharge rate Low Low

Operating temperature range -10°C ~ +60°C -20°C ~ +70°C

Price Relatively low Relatively high

III. Application scenarios: Each has its own strengths, choose as needed

The performance differences between AG and CR batteries determine their respective application areas:

AG battery: With stable voltage output and high energy density, AG batteries are often used in devices with high voltage stability requirements, such as:

Hearing aids

Calculators

Electronic scales

Watches

Remote controls

CR batteries: Thanks to higher operating voltage and longer service life, CR batteries are more suitable for devices with high power consumption or long-term use, such as:

Digital cameras

Electronic dictionaries

Bluetooth headsets

Smart door locks

Car keys

IV. Buying Guide: Avoid Misunderstandings and Spend Smartly

When buying button batteries, in addition to paying attention to the model and performance, you also need to pay attention to the following points:

Confirm device compatibility: Different devices have specific requirements for battery voltage and size. Be sure to choose a battery model that is compatible with the device.

Choose a regular brand: Poor-quality batteries may pose a safety hazard. It is recommended to choose well-known brands such as Panasonic, Sony, and Maxell.

Pay attention to the shelf life: The shelf life of the battery is usually 2-3 years. When purchasing, you should pay attention to check the production date.

Environmental treatment: Used batteries should be recycled in accordance with local regulations to avoid polluting the environment.

V. Summary: There is no best, only the most suitable

AG button batteries and CR button batteries have their own advantages and disadvantages, and there is no absolute good or bad. Choosing the right battery model requires comprehensive consideration of factors such as the voltage requirements, power consumption, and usage environment of the specific device. I hope this article can help you better understand AG and CR batteries and make wise choices in future purchases.