Although their small size and long service life means watch batteries are ideally suited for use in watches, they can also be found in other devices, such as:
• Pocket calculators.
• PDAs.
• Hearing aids.
• LED lights.
• Electronic toys and games.
When they are used in other devices, watch batteries are commonly called button batteries.
While some rechargeable watch batteries are available on the market, they are not easy to track down. After all, conventional watch batteries already provide a very long service life and rechargeable batteries may have a lower capacity.
The code on each watch battery should tell you whether it is rechargeable or not – be sure never to charge up a non-rechargeable battery.
Using watch batteries
Each watch battery has a useful code which will tell you things like the manufacturer, polarity and the date it was produced. This will help ensure you don’t mix old and new batteries together.
The code will also show what the watch battery comprises of, such as:
• L – Manganese dioxide.
• S – Silver oxide.
• P – Oxygen.
• C – Manganese dioxide.
• B – Carbon monofluoride.
• G – Copper oxide.
Used properly, watch batteries have the potential to last many years.
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