Why do alarm clocks use carbon batteries? How to change the battery in a combination lock

Although we often use batteries, we don't know much about the principles and classification of batteries. The alarm clock is the ringing sound that accompanies us every morning, waking people up to start a new day of life and work. Do you know why the alarm clock uses carbon batteries? In addition, are all batteries hazardous waste?

Contents of this article

1. Why do alarm clocks use carbon batteries?

2. How to change the battery of password lock

3. Are all batteries hazardous waste?

Why do alarm clocks use carbon batteries?

The reason why alarm clocks use carbon batteries is mainly because the physical properties of carbon battery components are stable and they are not prone to leakage. The output voltage of the battery is 1.5V, which is relatively stable. At the same time, it has a large internal resistance and a small output current. It is inexpensive and stable, making it more suitable for use in alarm clocks.

The reason why alarm clocks use carbon batteries is mainly because the electrolyte of carbon batteries is a gel, which is not easy to leak when in use. Its physical properties are also very stable compared to other batteries. It is more suitable for devices such as alarm clocks that use batteries for a long time, and it can also meet environmental protection requirements.

At the same time, the output voltage of carbon batteries is 1.5V, which is relatively stable and suitable for use in alarm clocks. In addition, it is inexpensive and safe and reliable to use. From an environmental protection point of view, it contains cadmium and can be recycled, so carbon batteries are more suitable for alarm clocks.

At the same time, alkaline batteries have lower internal resistance and larger output current than carbon batteries. Such performance is suitable for use in electrical equipment driven by small motors, but not suitable for use in precision electrical equipment such as quartz clocks and remote controls whose main internal working parts are quartz crystals, radio frequency chips, etc. Instantaneous large current shocks may cause damage.

How to change the battery of password lock

When replacing the battery of a combination lock, it should also be based on the different models and types of combination locks. For most combination locks, you can first press the battery and push it up hard, remove the old battery and then replace it with a new one. If an integrated panel is used, it is advisable to remove the entire panel and then replace the battery.

When replacing the battery of a combination lock, usually different combination locks have different methods of replacing the battery. If it is an ordinary combination lock, you must first press the battery and push it up, then remove the outer card cover, take out all the old batteries, and then replace the new batteries, and then touch the combination lock with your hand to see if it is successful.

If it becomes hot after being touched, it is best to wait until the temperature returns to normal before closing the outer shell. If you use an integrated panel password lock, it is best to remove the entire panel when changing the battery, then put the new battery in, and then close the panel.

If the battery is on the panel behind the combination lock, you can first remove the strip next to it, then remove the battery inside, and put the new battery into the slot facing the card slot. However, be careful not to put the positive and negative poles of the battery in reverse, otherwise a short circuit will easily occur. Then you can install the strip.

Are all batteries hazardous waste?

Not all batteries are hazardous waste. Currently, the batteries that are classified as dry waste include alkaline mercury-free batteries and mercury-free alkaline batteries. Most of the remaining batteries are hazardous waste. Batteries are classified as hazardous waste mainly because they generally contain heavy metals such as mercury and lead, which can pollute the environment.

Alkaline zinc-manganese batteries and nickel-metal hydride batteries such as No. 5 and No. 7 that are common in daily life are generally classified as other garbage.

At present, waste batteries are generally treated by centralized isolation and landfill.

If used batteries, which are hazardous waste, are directly discarded into the soil, in addition to polluting the soil, the rotten batteries may also seep into the soil and pollute groundwater.