How to buy button batteries for watches? What do you think of the model

Suits, leather shoes and shoes, coupled with a watch, look elegant. There are many kinds of watches. Do you know the model comparison table of the watch button battery if you want to replace the battery of the watch after using it for a long time?

The battery of quartz watches needs to be replaced. Many people do not know the battery model of the watch, or do not understand the model. If they do not want to go to the after-sales service and buy a battery to replace, they need to know the model comparison table of the watch button battery.

The vast majority of watches use silver oxide button batteries. The voltage of new batteries is generally between 1.55V and 1.58V. The battery's shelf life is three years. The running time of a watch that works well is generally no less than two years. Some watches also use a 3V button lithium battery, which has a shelf life of 7 years. Generally, users do not have to worry about the expiration of the battery.

The identification method is as follows:

The English letters in front of the model name indicate the type of the battery. The first two digits indicate the size. The second two digits indicate the diameter. The button battery, due to its small size, has a diameter of 4.8mm to 30mm and a thickness of 1.0mm to 7.7mm.

The comparison table of button battery models can be found on the Internet or in the watch sticker bar forum. The model of silver oxide button battery in Switzerland is 3 # #, and the model in Japan is usually SR # # # SW, or SR # # # W (# represents an Arabic numeral). The model of button lithium battery is usually CR # # # #. Button batteries made of different materials have different models and specifications.

The comparison table of button battery models is roughly as follows: size mm Swiss model=Japanese model 4.8x1.6mm337=SR416SW, 5.8x1.2mm335=SR512SW,5.8x1.6mm317=SR516SW，5.8x2.1mm379=SR521SW，5.8x2.6mm319=SR527SW，6.8x1.4mm339=SR614SW，6.8x1.6mm321=SR616SW。