Watch batteries
The construction of watch batteries
Watch cell batteries are of a shape of a small disk, housed in a metallic disk with very thin edges. The surfaces of the disk, housing the battery become the two conducting areas, and forms the positive and negative electrodes of the battery. The housing of the watch battery is generally made up of nickel or other metal, in which the top surface is termed as the first polarity contact, and the bottom surface of the metal housing is called the second surface contact.
The basic construction of the battery follows a simple method of having the anode can containing zinc and an electrolyte mixture, which forms the negative terminal of the cell. The battery uses a separator, and this separator is usually a porous material which contains the electrolyte. The cathode can of the battery, which is the positive terminal of the battery contains cathode material and electrolyte mixture.
Why different types of watch batteries?
You can find many different types of watch batteries in the market. It would be wise for you to understand that watch batteries are not manufactured in the usual ways like the button cell batteries that are being used in hearing cells. The important feature in watch batteries is that it is manufactured with precision, maintaining the tolerances very accurately, making sure that there is no leakages in the long run.
Watch batteries are made in various specifications, which are used in different kinds of applications. Some watches would need a high current to operate, while another would run with only a small current supply. Within this category, there are watches which would require larger current than required for a short time, while the other type may require lower current for a longer period of time. All these applications would need the battery to maintain an accurate constant voltage through-out the life of the cell. Since a single watch battery cannot possibly meet all these specifications, variety of batteries are manufactured in order to meet the application criteria.
Watch battery recycling
In the present days, the major consideration that has come up in the battery market is its disposal method when the cell has become completely depleted. The environmental concern has become quite serious owing to the poisonous effect from battery leakage. This is the reason why manufacture of mercury batteries has practically stopped.
To protect the environment, watch batteries need to be properly recycled in a safe way. A small amount of mercury is often used in watch batteries in order to avoid corrosion, and corrosion may cause damage to your watch. The mercury is contained in a sealed chamber and has got a remote chance of leaking. Hence your watch is well protected against any damage. It is better to hand over your used battery to your watch maker or your watch-jewelry retailer when you replace your watch battery. They are professionals to have the knowledge about recycling such used batteries.
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