The answer is not necessarily.
Under normal circumstances, regularly produced button batteries are placed in a relatively airtight environment (such as inside a watch) and will not leak or corrode like ordinary dry batteries in daily life after being left aside for a long time. .and other phenomena. However, counterfeit and poor quality products are excluded.
From a structural point of view, button batteries generally consist of an anode (positive electrode), a cathode (negative electrode), their electrical contact liquid, a ring sealing and an outer casing. The exterior is usually stainless steel (nickel plated) and serves as a positive electrode. The negative electrode is a circular stainless steel cover. The positive electrode and the negative electrode are isolated by a sealing ring. Material In addition to its main functionmain insulation, the sealing ring is also an important link to prevent battery leakage.
For the vast majority of counterfeit button batteries, the disadvantages are: firstly, low battery capacity (generally lower than the national standard 1.55V) and short life; second, insufficient sealing performance, prone to leakage phenomenon; , corrodes electrical appliances; third, the voltage charging characteristics are poor, and the battery discharge curve has a steep downward slope. fourth, it is easy to produce air swelling, causing the battery to swell, deform and eventually leak;
The reasons for coin cell battery leakage generally include the following three situations:
1. The sealing ring is made of old materials and has poor flexibility, resulting in leakage;
< p>2. There isa gap in the R position of the positive steel case of the battery when sealed, causing leakage3. The battery separator paper is damaged, causing a short circuit between; the positive and negative electrodes, causing bloating or leaking.