Button batteries are divided into two types: rechargeable and non-rechargeable button batteries are dry batteries and can be checked; button batteries that need to be recharged are lithium batteries and can only be taken with you because they are rechargeable. are not suitable for use in conditions such as high altitude, low pressure and bumpy conditions, lithium batteries may ignite spontaneously, so lithium batteries cannot be checked. And the rated energy value of lithium batteries should not exceed 100 Wh; lithium batteries exceeding 100 Wh but not exceeding 160 Wh may be installed on equipment in checked baggage or carry-on baggage with airline approval; lithium batteries exceeding 160 Wh are strictly prohibited;
Portable electronic devices (watches, calculatorscameras, mobile phones, laptops, camcorders, etc.) containing lithium or lithium-ion cells or batteries intended for personal use by passengers or crew members must be carried as carry-on baggage . -on board baggage on board the aircraft and the lithium metal battery must not contain more than 2 grams of lithium and the lithium-ion battery must have a rated energy value not exceeding 100 Wh (watt hours).
Checked baggage must be well packaged, locked and tied firmly, capable of withstanding a certain pressure, and can be loaded, unloaded and transported safely under normal operating conditions, and must meet the requirements following conditions. , the carrier may refuse collection and transport:
1. Suitcases, travel bags and handbags must be locked.
2. Two or more packages cannot begrouped into one.
3. No other objects may be attached to the baggage.
4. Bamboo baskets, mesh bags, straw ropes, straw bags, etc. cannot be used as outer packaging of baggage.
5. The passenger's name, detailed address and telephone number must be written on the baggage.
Free baggage allowance for each passenger (including checked baggage and personal baggage): 40 kg for first class passengers with adult or child tickets, 30 kg for business class passengers and 20 kg for economy class passengers. . Passengers holding infant tickets do not benefit from free baggage allowance. If two or more passengers traveling together on the same flight to the same destination check their bags at the same time and place, their free baggage allowance may be calculated based on their tierx respective tariffs. For domestic segments that constitute international carriage, each passenger's free baggage allowance is calculated based on the free baggage allowance of the applicable international itinerary.
Passengers must check in their baggage with a valid ticket. The carrier will indicate the number and weight of checked baggage on the passenger ticket and on the baggage check. The carrier must generally collect and check baggage during check-in on the day of flight departure; If a passenger in the group has too much baggage or needs to check it in advance for other reasons, the carrier can agree with the passenger on a time and deadline. place of collection and transport. The carrier must affix a baggage tag to each baggage checked by a passenger and provide the identification coupon to the passenger. Self-handling baggage approved by the carriermust be weighed with the checked baggage and then handed to the passenger for handling in the cabin, and a self-handling baggage tag must be attached to the baggage. Items that are not baggage must be checked as cargo and cannot be checked as baggage.
Passengers' excess baggage must be carried on the same aircraft as the passengers if the capacity of the aircraft on which they are traveling allows it. Passengers must pay an overweight baggage fee for excess baggage. Overweight baggage fees are calculated at 1.5% of the economy class fare per kilogram. The unit is yuan.
Common rechargeable and non-rechargeable batteries include 3.6V rechargeable lithium-ion button cell (LIR series) and 3V rechargeable lithium-ion button cell ( ML or VL series). Non-rechargeable batteries include 3V lithium manganese button cells (CR series) and1.5 V zinc-manganese alkaline button cells (LR series and SR series).
The code for button batteries generally has an R followed by a number. These numbers directly represent the diameter and thickness of the battery, such as CR3032 lithium button, which refers to a diameter of 30mm and a thickness of 32mm. Some special diameter and thickness codes, such as LR41, refer to an alkaline battery, a. A diameter of 7.9mm and a thickness of 3.6mm, SR43 refers to the silver oxide battery, 11.6mm in diameter and 4.2mm in thickness.
Here are some common button batteries:
Detailed information:
Classification of button batteries
1. Lithium battery
Ordinary disposable lithium batteries are lithium manganese (code C) batteries with a nominal voltage of 3 V.
A less common type of disposable lithium battery is the fluorocarbon lithium battery (code B), which has a nominal voltage of 3 V.
In addition, common secondary lithium batteries include ML lithium batteries (code name ML), with a nominal voltage of 3 V.
The size number of lithium batteries generally adopts the new IEC numbering method. The first two numbers are the diameter (mm) and the last two numbers are the thickness (0.1mm), which are very close. each other.
2. Silver oxide
The present invention has the characteristics of long life and large capacity. The battery uses silver oxide as the positive electrode, zinc metal powder as the negative electrode, and potassium hydroxide or sodium hydroxide as the electrolyte. Electricity is produced by the chemical reaction of zinc and silver oxide.
The thickness (height) of silver oxide coin cell batteries is 5.4mm, 4.2mm, 3.6mm, 2.6mm and 2.1mm, and its diameter is 11,6mm and 9.5mm, 7.9mm, 6.8mm. four specifications.
You must choose one based on the size of its location. Commonly used models include AG1, AG2, AG3, AG1O, AG13, SR626, etc. AG is a Japanese standard and SR is an international standard.
3. Silver peroxide
The structure of the battery is basically the same as that of the silver oxide button cell. The main difference is that the anode (anode) of the battery is made of silver peroxide.
4. Alkaline manganese
This battery has the advantages of large capacity, good low temperature performance, cheap materials and low price, and can meet the requirements of continuous current discharge important. .
The disadvantage is that the energy density is not sufficient and the discharge voltage is not stable enough. The anode of alkaline manganese button battery is manganese dioxide, the cathode is zinc, the electrolyteis potassium hydroxide and the nominal voltage is 1.5 V.
5. Mercury
Also known as mercury battery, it can be used under high temperature conditions, stored for a long time, has stable discharge voltage and good mechanical properties. However, its low temperature characteristics are not good. The battery has a positive value for mercury and a negative value for zinc. The electrolyte may be potassium hydroxide or sodium hydroxide. Its nominal voltage is 1.35V.
6. Lithium-ion
The rated voltage of the disposable lithium manganese coin cell battery is 3V, the termination voltage is 2V, and the typical operating current is 0.1-0.2mA . It uses manganese dioxide with very stable chemical properties as the positive electrode material and lithium metal with very high specific energy as the negative electrode material.
The average annual reduction in capacity does not exceed 2% and the storage life is long. The battery adopts a semi-sealed structure and is safe to use. Disposable lithium manganese button batteries have a wide temperature adaptability range and can work normally from -20 to +60 degrees Celsius.
Suitable for electronic dictionaries, motherboards, CMOS batteries, watches, etc.
7. Secondary Lithium
This is a second button cell and a button cell that can be charged and discharged multiple times; rated voltage: 3.7v; charging voltage 4.2v; p>
You can see this mark on the back of the battery
LR-alkaline-1.5V
SR-silver oxide-1.55V
CR-lithium-3v battery
Zinc air-1.4V
Lithium-3.7V secondary battery
8. Chuixin
The battery has the characteristics of high energy density, good storage performance, low autoddischarge and long life. Its disadvantage is that the internal resistance of the battery is high. The positive electrode of the battery is manganese dioxide or iron disulfide, the negative electrode is a hammer, and the electrolyte is organic matter.
The rated voltage of Li/MnO hammer battery is 2.8V and the rated voltage of Li(CF)N hammer battery is 3V.
9. Battery foot welding
Battery welding foot, also known as battery foot welding or pin battery, also known as battery foot welding.