Model comparison table of button battery

　　Silver oxide button battery is the most commonly used watch battery, and most watches use silver oxide button battery. The voltage of the new battery is generally between 1.55V and 1.58V, and the shelf life of the battery is 3 years. The running time of a watch that works well is generally no less than two years. Lithium button batteries and 3V lithium button batteries are mostly used in anti-theft devices, access control, computers, etc. Some watches are also equipped with lithium batteries. The warranty period of lithium battery is 7 years. Generally, users do not have to worry about the expiration of the battery.

　　The silver oxide button battery model is 3 # #, and the Japanese model 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.

　　4.8 x 1.6 mm 337=SR416SW 5.8x 1.2 mm 335=SR512SW 5.8 x 1.6 mm 317=SR516SW 5.8 x 2.1 mm379=SR521SW 5.8 x 2.6 mm 319=SR527SW 6.8 x 1.4 mm339=SR614SW 6.8 x 1.6 mm 321=SR616SW