Best HnF Coin & Button Cell Batteries in 2022

HnF Coin and Button Cell Batteries

There are many differences between HnF Coin & Button Cell Battery types. Understanding the various standard names, sizes, and hazards of these batteries is essential for your purchase. Learn about recharging these batteries and the dangers associated with ingestion. Then you can purchase a safe product for your needs. In this article, we will discuss the most important considerations you should make when buying these batteries.

Standard names

There are three standard names for coin and button cell batteries: alkaline, lithium, and silver oxide. Each one of these types of batteries has different characteristics and are best used for different applications. To maximize the life of your coin or button cell battery, be sure to read the specifications carefully. Then, you'll know what you're getting. Here are some common names for HnF and button cell batteries.

These are the most commonly used types of button and coin cells. The anode materials are lithium, manganese dioxide, and silver oxide, while the cathodes are made of carbon monofluoride, oxygen, or other materials. Before the mercury toxicity crisis, button cells commonly used mercury oxides, but these are no longer available. The same holds true for their replacement. If you use the wrong type of battery, you risk destroying your device.

The size of a coin or button cell is indicated on the package. A two-digit code indicates the size of the cell in millimeters. The last two digits specify the height of the battery. In most cases, the size is indicated by the letter "R" and the number of digits follows the initial. This is how you can determine which type of coin or button cell is the right fit for your device.


You can choose between coin and button cell batteries. Coin and button cells are flat, round, and are usually smaller than their thickness. They can be as small as 5mm or as large as 25mm. Both are primary cells, and they are used in small electronics, such as pocket calculators and laser pointers. Some coin and button cells are also used in artificial cardiac pacemakers. The sizes of these types of batteries can vary from one manufacturer to another.

Coin and button cell batteries are packaged with a two or three-digit code. The code represents the size of the cell. The first one or two digits encode the outer diameter in whole millimeters. The last two digits indicate the overall height in tenths of a millimeter. However, it is best to refer to the manufacturer's guidebook for the exact size of the battery.

There are many advantages of coin and button cell batteries. They are small and convenient to use. However, their size poses a significant risk to young children, especially those who are prone to swallowing them. As loose button and cell batteries are easily swallowed, they can cause severe injury or even death. The hydroxide produced by the battery can burn tissue, and is particularly dangerous for children under four years old.


There are several hazards associated with the use of coin shaped and button cell batteries, including their propensity to lodge in the airway or penetrate the body. This can cause extensive tissue damage and even death within two hours. The most serious injuries are those caused by ingested batteries in children, especially those under the age of six. For these reasons, it is important that anesthesiologists be familiar with the hazards and proper anesthesia management for these batteries.

The UL 4200A safety standard for coin & button cell batteries has been updated to ensure safety. This new standard applies to all products that are child accessible and contain these batteries. These standards aren't universally applicable, but will cover most household items that contain button/coin cell batteries. However, some small products may not be covered by this safety standard. If you suspect that a battery in a small item is not safe for children, it is advisable to consult the manufacturer's safety guidelines to ensure safety.

Children can be harmed by lithium and button cells, even if the batteries are sealed in a container. The most important precaution is to lock away the spare batteries and keep them out of reach of curious children. Parents should also familiarize themselves with emergency procedures in case a child accidentally swallows a button battery. If you suspect any safety issues, be sure to contact your pediatrician. The information presented here is not intended to replace medical attention and should not be used as a substitute for it.


The word "HnF" stands for high-nomination, which is often associated with lithium batteries. The letters "HnF" are also used in China. HnF is an abbreviation for lithium-ion batteries, which are essentially alkaline zinc-manganese batteries. The battery family has several names and classifications, including LIR, ML, and LV. These names are often abbreviated with the letter "LIR" or "ML" which refers to the IEC and Japanese standards. The letters "LIR" and "LV" indicate the battery type, with the first digit indicating the diameter (mm), and the other two indicating the height (mm).

Both coin cells and button cells are rechargeable. The coin battery is typically flat and cylindrical in shape, while the button cell is round. The diameter is greater than the thickness, and they have a range of sizes from 1.0mm to 7.7mm in diameter. They are commonly used in watches and other small electronics. They are rechargeable, and many HnF batteries last up to a year when used continuously.

Rechargeability of HnF coin / button cell batteries is limited by the availability of the material. Most of these batteries are made of zinc, silver, manganese dioxide, and copper, with the anode material being zinc. Some older button cells use mercury oxide, but due to the toxicity of mercury, they are not commonly available. However, some brands do use zinc-based batteries.

Safety standards

In addition to the UL 4200A standard, the safety standards for HnF coin & button cells must be followed in products that use the batteries. The rules include the use of a tool or two simultaneous actions to open the battery compartment. They also require that a functional battery compartment door/cover remain closed after various tests. These are important considerations for the safety of products intended for children.

The UL 4200A safety standard for coin & button cell batteries requires safe placement of the battery. The standard also covers the use of warning labels for battery safety and wording and font size. It is recommended that manufacturers incorporate warnings on coin & button cell batteries that are placed in products that are intended for children. The standard is applicable to household type products such as toys and electrical appliances. The UL 4200A standard covers products that are made to be used by children.

To improve the safety of coin & button cell batteries, manufacturers and retailers must implement UL 4200A safety standards. While safety standards may not be immediately visible, retailers can be instrumental in driving change by asking manufacturers about their safety measures. By doing so, retailers can help reverse the trend of ingestion incidents. This can be done by ensuring that manufacturers follow the regulations and are transparent about their safety measures.

Symptoms of ingestion

Children should not be exposed to button and coin batteries. They can be dangerous and can cause severe internal burns if swallowed. The battery can lodge in the esophagus and burn through major blood vessels. The best way to prevent this is to lock away the batteries, make sure children cannot reach them, and keep them out of the reach of small children. The following are some first aid tips for children who may inadvertently swallow the battery.

If ingestion is suspected, radiographs should be taken to help rule out a more serious condition. Plain radiographs taken from an anteromedial and anteroposterior view should be interpreted. In addition to evaluating the esophagus, the lateral view should show a step-off that makes it easy to distinguish button cells from disc batteries. A double-density sign on the A-P view indicates a button battery. Repeat films at alternate angles can also help with diagnosis.

Patients should be monitored for changes in voice, respiratory distress, and stridor after removing the battery. If the patient is awake, cords should be visualized under direct laryngeal view to confirm that both vocal cords are mobile. Ingestion of coin & button cell batteries can cause unilateral or bilateral vocal cord paralysis caused by damage to the recurrent laryngeal nerve. If a battery lodges in the esophagus, it is imperative to consult a physician immediately.

Mark R. Mannex

Over 40 years experience as a Fire Protection Engineer, with project experience in commercial, industrial, aerospace, military, and public sectors. Additionally, over a decade of in-depth experience in HVAC and piping design engineering, with a separate PE designation.
Recently retired from FM Global, Mark is now President of Mannex Engineering LLC, offering a wide variety of hazard and risk engineering consulting.
Consult with FM Global engineering and insurance staff and clients on performance based engineering property loss prevention issues throughout the Northwest USA. Liaise with FM Global Research for application of latest developments to clients' locations.

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