Generally, the battery life of quartz watches is between 1 and 3 years, and the current IC circuit of quartz watches is very low (about 1 microampere), so it can greatly improve the battery life of quartz watches. For watches with three pointers (seconds hand) when they are not in use, they can also pull out the handlebar to stop the stepping motor running, which is also commonly called the power-saving function of watches. Watches that are not used in the short term should pull out the handlebar.
However, for long-term non-use of quartz watches need to pay attention to some problems, the so-called long-term is beyond the validity of the battery. Silver oxide batteries are basically used in quartz watches. Like other types of batteries, silver oxide batteries can self-discharge even when they are not in use (such as storage), and the size of self-discharge rate is closely related to the ambient temperature and humidity. The higher the temperature, the greater the self-discharge rate.
Some silver oxide batteries are also prone to alkali creeping and leakage problems, especially those with poor quality and poor sealing and tightness, and often occur after the battery is running out of electricity or has run out of electricity. This phenomenon is very similar to that of ordinary dry batteries. There are alkaline electrolytes inside silver oxide batteries, usually sodium hydroxide or potassium hydroxide, which are highly corrosive. Once leaked, they will cause great damage to the watch. First, it will rust the reed contacts of the watch circuit; second, serious leakage will also rust the core splint of the watch, the most serious situation will hurt the watch dial. I have such a radar watch. After 10 years of long storage, it was found that the battery had leaked and had been corroded and discolored near the battery. Later, it cost about 700 yuan to change the dial. It was a great lesson!
There are many examples of battery damage, not just watches. For example, if the dry battery in the flashlight is not used for a long time, the battery will rise when it is powerless. (Silver oxide battery also has this problem, called "inflation") It can not be pulled out. If it is replaced by a camera, it can be mixed.
So, I suggest that if you have quartz watches that you don't use for a long time, especially high-end watches, it's better to send them to the repair shop and take out the batteries first in case of accidents. There is also a point to change batteries to choose brand-name batteries of good quality, pay attention to a point, to change batteries regularly (not necessarily after the battery is dead). As you know, a considerable proportion of the faults of quartz watches are caused by batteries.