Quartz watch replace the battery carefully. For thin quartz watches, the battery selection should be especially careful, because the heart of this type of watch is also very thin, if the battery is fixed with a press reed and screws, you can not use a thicker battery.

There have been cases of Swiss watch failure caused by improper use of thickened batteries:

There is a Cartier watch, originally should have used the SR616 model battery, the result is used SR621, the thickness increased by 0.5 mm, and the watch is very thin, that is, the space height in the case is small, so that when the watch back cover, the battery contacted the table after the cover side, and the pressure on the heart, resulting in no reasonable gap between the parts below the dial, Calendar does not jump, at the same time can not quickly adjust the calendar disk, and the feeling of the needle is very tight and wrinkled, in a few cycles of continuous needle, unfortunately, the straight teeth of the lying wheel are also broken.

Changing the battery for a quartz watch is a simple matter. Because the quartz watch battery does not have 100 specifications or models, there are dozens of large, large and small, thin and thick, the general repair shop commonly used models will have, less commonly used may not have, especially those too small and thin or relatively large and thick.

The international models of silver oxide batteries actually represent the geometric size of the battery shape, such as SR626, indicating that its diameter is more than 6 mm, and the thickness is 2.6 mm, and other models are the same. More expensive quartz watches are usually marked on the back cover of the watch or near the splint of the center battery, indicating the battery specifications used by the center.

The capacity of the thick battery is larger than that of the thin battery, which is good for extending the battery replacement cycle, if the battery is chosen to be thinner than the specified battery, but also to prevent the battery spring from being stuck in the battery, causing the battery to spring up, out of the negative reed, or contact the virtual; Therefore, if necessary, it is also necessary to pad the battery (positive electrode) with a metal foil or press with “green cement”.

Watch repair this work needs to be very careful, can not make do; Beijing has a local saying: called “ear scoop fried sesame – you fool me, I fool you”, that if you do not follow the rules, there may be things that go wrong, an inattentive everything, not to say even “steamed bread can cause a blood case”, all things can not do, in the case of conditions, or should try to replace the watch battery in accordance with the provisions of the model.