Button Cell Common Manufacturer CodeA code used by China battery manufacturer is AG (alkaline) or SG (silver) followed by a number, where 1 equates to standard 621, 2 to 726, 3 to 736, 4 to 626, 5 to 754, 6 to 920 or 921, 7 to 926 or 927, 8 to 1120 or 1121, 9 to 936, 10 to 1130 or 1131, 11 to 721, 12 to 1142, and 13 to 1154. To those familiar with the chemical symbol for silver, "Ag", this may suggest incorrectly that AG cells are silver. | Chung Pak Battery Works Limited professionally manufacturers high quality dry batteries, including cylindrical battery and button cell. Our batteries can also be decided into —— 1. Primary battery (disposable battery), which are designed to be used once and discarded when they are exhausted. 2. Secondary battery (rechargeable battery), which are designed to be recharged and used multiple times. Button cells are single cells, usually disposable primary cells. Common anode materials are zinc or lithium. Common cathode materials are manganese dioxide, silver oxide, carbon monofluoride, cupric oxide or oxygen from the air. Mercuric oxide button cells were formerly common, but are no longer available due to the toxicity and environmental hazard of mercury. Cells have a metal can forming the bottom body, with a circular insulated top cap. The can is the positive and the top the negative terminal. Cells of different chemical composition made in the same size are mechanically interchangeable. However, the composition can affect service life and voltage stability. Using the wrong cell may lead to short life or improper operation (for example, light metering on a camera requires a stable voltage, and silver cells are usually specified). Sometimes different cells of the same type and size and specified capacity in mAh are optimised for different loads by using different electrolytes, so that one may have longer service life, than the other if supplying a relatively high current. |
About Chung Pak —— Large Button Cell Manufacturer & Exporter in China
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