Safety tips in daily life: Hand warmers can also explode! Frightened, I quickly took a look

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Winter can be extremely cold, and at such times people naturally think of a useful item to help keep their hands warm – that is, hand warmers. But when using hand warmers, it’s important not to forget the safety precautions! Hand warmers available on the market can be divided into two main categories: liquid-filled types and disc-shaped types. Among them, liquid-filled hand warmers can be further divided into electrode-type and heating wire-type based on the heating mechanism, with the electrode-type accounting for the vast majority. The **standard “Safety of Electrical Appliances for Household and Similar Use”** issued in 2005 stipulates that \"electrodes shall not be used for heating liquids.\" Since there is currently no product standard for hand warmers, strictly speaking, hand warmers that use electrodes for heating are considered substandard. Fluid-filled hand warmers, round-shaped hand warmers. Although hand warmers are convenient to use, improper handling can still lead to explosions. The main cause of hand warmer explosions is a malfunctioning thermostat. Inside the hand warmer, there is a temperature controller that automatically shuts off the power when the water temperature reaches a certain level, ensuring safety. When the temperature controller of a hand warmer fails, the liquid inside continues to heat up and vaporize, and the resulting high pressure causes an explosion. How to choose a hand warmer? 1. Brand: There are many brands of hand warmers available on the market; these include low-quality products made by small manufacturers, as well as well-known brand products produced by established large companies. Here, the editor still advises everyone to choose well-known brands whose products have passed safety certifications from reputable manufacturers, in order to ensure the safety of users. 2. Appearance: Check whether the hand warmer is well-made, with even and fine seams, and free from scratches or burrs. When purchasing a hand warmer, it is essential to carefully check the condition of its electrical circuit; this is also a very important aspect when choosing a hand warmer. 3. Safety: In addition to checking the integrity of the circuit components as mentioned above, it is also important to ensure that the hand warmer is made from high-quality fire-resistant insulation materials, and that it uses high-grade, reputable electric heating filaments. These are all aspects that are closely related to the safe use of hand warmers, and everyone must not overlook them. How to avoid safety hazards associated with hand warmers: 1. Before turning it on, check whether there are any water droplets at the socket of the hand warmer. For safety reasons, the socket should be dry; first plug in the hand warmer’s plug, and then plug in the power plug to turn it on. 2. After power is turned off, first unplug the power cord, and then remove the plug of the hand warmer ； During use, it is strictly prohibited to drop it, sit on it, or puncture it with sharp objects to avoid leakage; also, do not hold the electric hand warmer in your arms while it is powered on. 3. When power is applied, no one shall leave the site, and attention should be paid to the indicator light; when the indicator light goes out, it indicates that the heating by power supply has been completed ； Soft hand warmers available on the market contain a \"heat-generating liquid\"; when this liquid heats up, it produces a small amount of gas, which causes the bag to expand abnormally. Therefore, under normal conditions, it is necessary to release any remaining air every 10 to 20 cycles of heating. 4. Charging should be stopped immediately once the maximum temperature is reached (usually indicated by a status light). Many people, for convenience, place it on the bed to charge it, which can easily lead to the ignition of flammable items such as quilts and sheets. 5. It is strictly prohibited to heat electric hand warmers by boiling or roasting them. If liquid leaks from the bag of the electric hand warmer, use should be stopped immediately. 6. When not in use, electric hand warmers should also be protected from heavy pressure and stored properly; the liquid inside the bag must not be poured out, otherwise it will not generate heat when recharged or may get damaged. 7. When purchasing hand warmers, consumers should not seek cheap options; avoid using products without proper branding or quality certifications. When charging a hand warmer, it is essential to follow the charging time specified in the instructions – never charge it for an extended period, as this could cause the hand warmer to explode and injure people. 8. Under normal circumstances, it is best not to use a hand warmer as a hot water bottle. Friendly reminder: There is currently no specific testing standard for such products. Therefore, if such products have quality issues or are used improperly, they can cause harm to consumers’ health, and there are also difficulties in detecting such problems. Therefore, consumers should purchase electric hand warmers from reputable stores, choosing brands that come with proper certification and complete test reports. When purchasing goods, be sure to ask for an invoice or other valid receipt as evidence in case of any disputes over purchases, which will help in protecting your rights.