How to identify shoddy button batteries and expired button batteries?

Now the use of button batteries is very extensive, so, our omnipotent, ubiquitous "Shanzhai" also began to act, in order not to buy fake and outdated button batteries, and everyone to come to the August 18th bar.

Steps / Methods

From the battery logo.

They have no trademarks, no producing areas, three production dates, and four inspection certificates. They are only marked with English "BUTTONCELL" and Japanese on the battery, giving people the illusion of foreign manufacture.

From the appearance of the battery.

Most of the surface of the negative electrode of this type of battery is plated yellow, giving a "gold" feel. The bottom of the positive shell is prone to rust spots. As shown in the figure above, the surface coating of the real button battery is smooth, and the black seal ring on the back of the battery should not be colored.

Identification of shoddy button batteries and expired button batteries

From the performance of the battery.

Most alkaline manganese batteries have low capacity, usually less than the national standard of 1.55 V, and have a short service life; Easy leakage of liquid, corrosion of electrical appliances; The voltage load characteristics are poor, and the battery discharge curve is a sharp decline slash; It is easy to produce flatulence, causing the battery to "drum the stomach."

Identification of shoddy button batteries and expired button batteries

Obsolete Button Battery Recognition: The negative surface of the button battery will be marked with two numbers: "**". The first number is the year and the second number is the month. The second number is "0, X, Y". For "October, November, In December, the battery should be replaced if it exceeds the expiration date.

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