Coin and Button Cell Batteries

Button batteries

Flat batteries

Button batteries, also called flat or penny type, are round batteries with a diameter of 4.8 to 30 mm and a thickness of 1 to 7 mm. Flat batteries are usually small type penny batteries with a working voltage of 1.5V to 3 3V and are used for portable electrical appliances or electronic devices that have low voltage and low power consumption such as electronic scales, calculators, clocks, car remotes, children's toys and others.

Types of batteries:

• silver oxide battery
• peroxide silver battery
• alkaline manganese battery
• mercury battery

Button batteries are a type of disposable battery with a long working life, up to 3 years, they take up little space due to their size. A standard flat cell battery is usually a silver oxide, silver peroxide, alkaline manganese, or mercury cell. Depending on the type of material, size and purpose of coin cell batteries, their models usually start with AG, SR or CR followed by a number.

Silver oxide battery

The standard flat battery of silver oxide as the positive electrode, zinc metal as the negative electrode, potassium hydroxide or sodium hydroxide electrolyte. Electricity is generated by the chemical interaction between zinc and silver oxide. Their models are usually AG or SR, which is the international standard model.

mercury battery

Mercury button batteries are generally used under conditions of high temperature, long-term storage, smooth discharge voltage. The positive terminal of the battery is mercury, the negative terminal is zinc, the electrolyte can be potassium hydroxide or sodium hydroxide.