To run the miniature device, you will need a 321 battery or its equivalent. This element has a large internal resistanceThis allows the device to safely supply electricity to the consumer for a long time. This energy source is produced in the form of a flattened round cylinder, commonly known as a "tablet."
Battery characteristics 321
The table below shows the main parameters.
| Form | Tablet |
| Weight | About 1 gram. |
| Height | 1.6 mm. |
| Diameter | 6.8 mm. |
| Sealant | Plastic/rubber. |
| Capacity | About 16 mAh. |
| Voltage | 1.55 volts. |
| Designation | 321 |
| IEC coding | SR65 |
The positive and negative poles are made of materials that are harmless to humans. The anode is made of zinc. The cathode is made of silver oxide. The electrolyte is sodium or potassium hydroxide. Manganese can also be used.
Devices that use battery 321
- Watch.
- Microphone flashlights.
- Remote controls.
- Medical devices.
- Toys.
- Musical instruments.
- Walkie-talkies.
The 321 battery is also suitable for homemade crafts!
Analogues of battery 321
This element can be replaced with a number of similar power elements.
- Renata 321.
- V321;
- SR616SW.
- S34;
- 280-73;
- SR616;
- SBAF/DF;
- SR65;
- 1174SO;
- RW321;
Please pay attention to the dimensions and voltage before replacing.
Does battery 321 charge?
In reality, this is not a battery and cannot be charged. Following charging instructions is not recommended, as it may cause the cell to overheat or explode.
The battery is running low It's slow, so it will last a long time. If you need a similar power source, it's better to buy a new one.
Manufacturers producing element 321
Several companies are involved in manufacturing; we will list the most common ones below.
- Trophy is a Russian manufacturer producing high-quality products.
- Energizer – a foreign American manufacturer. Cutting-edge technologies were used in the creation of the 321 battery. The brand is well-publicized.
- Maxell – This company's batteries deliver energy evenly over a long period of time. Their casing withstands harsh conditions well.
- Vara is European quality. It lasts a long time and drains slowly.
- Camelion – This Chinese manufacturer produces powerful batteries. They can supply electricity for long periods of time without voltage drop.
- Vinnic.
- Rexant.
- Videx.
In addition to those listed above, there are a number of other power elements.
When purchasing a 321 battery, make sure it meets your specifications. Here are the main things to consider:
- Dimensions.
- Packaging – it must be intact.
- Capacity.
- Voltage.
- Manufacture date. The closer to the purchase date, the better.
Thus, using the information from this article, you will purchase a working and long-lasting v321 battery!









