People don’t really understand the 18650 battery, and they haven’t even heard of this name. I don’t know that these five numbers represent a type of battery, because 18650 batteries are mostly used in the industry, while civilians are rarely used. Most of them are used in laptop batteries. In addition, they are often used in high-level bright light flashlights and mobile power supplies that were popular at the time. However, with frequent blasting incidents of mobile power supply, 18650 also began to come into people's sight, and people began to know the 18650 battery, and also began to misinterpret it. Misinterpretation 1: 18650 is not safe, simple blasting 18650 lithium-ion battery The 18650 we often talk about today actually refers to the battery's appearance standard. It is a standard battery model determined by Japan's SONY company to save money in order to save money. 18 indicates a diameter of 18mm, 65 indicates a length of 65mm, and 0 indicates a cylindrical battery. The 18650 battery originally refers to nickel-hydrogen batteries and lithium-ion batteries. Because nickel-hydrogen batteries were rarely used at the beginning, they mostly refer to lithium-ion batteries. The nominal voltage of a single-cell of 18650 lithium-ion battery is: 3.6V or 3.7V; the discharge end voltage is: 2.75V. The common capacity is 1200~3100mAh, and higher than 3400mAh is basically a false mark. Since Sony launched in the 1990s, the 18650 battery has always been popular. The 18650 battery is widely used in the industrial field and electronic equipment such as laptops, walkie-talkies, instruments and other electronic devices due to its large capacity, high energy storage efficiency, good firmness, non-recalling effect, high reincarnation life span, and no toxic substances. Even Tesla electric vehicles, which are very popular, use the 18650 battery pack provided by Panasonic. Why does the battery explode? Most of the 18650 batteries are packaged with steel shells. Because of the lack of maintenance function, the internal pressure will increase sharply when overcharging (moderate charging), and will explode when the overcharge value exceeds the contaminated value. Problems such as short circuit, too high temperature, or battery being squeezed and deformed or even punctured may cause battery explosion. Short circuit maintenance (hazardous operation, please do not imitate) There is no problem with good quality 18650 bathing (do not imitate) Through 30 years of development, the 18650 battery preparation process has been very mature. In addition to the improvement in functions, its insurance is also very good. In order to avoid blasting of the sealed metal shell, the 18650 battery was equipped with a fuse valve on the top. The fuse valve was standard for each 18650 battery and was also an important explosion-proof barrier. When the internal pressure of the battery is too high, the top fuse valve will open the exhaust gas to reduce pressure to avoid blasting. However, when the fuse valve is open, chemical substances leaked from the battery will react chemically with oxygen in the air under the premise of high temperatures, and it is still possible to catch fire. In addition, the local 18650 battery also had its own maintenance board, which had functions such as overcharge and over-discharge and short-circuit maintenance, and had very high insurance functions. The previous mobile power blasting incident was all caused by unscrupulous manufacturers' failure to apply the residual 18650 battery and even second-hand waste power to save money. At that time, the 18650 batteries produced by major battery manufacturers such as Panasonic, Sony, Samsung, etc. were actually very safe, and the application rate of the 18650 battery is very high. We may use the correct application in daily applications and avoid short circuits, damage or excessive temperatures, so we do not have to worry about the battery breaking. We cannot overturn a boat with one bamboo pole, and use individual residual products to characterize the insurance of 18650.The 650 battery also comes with a maintenance board, which has functions such as overcharge, overdischarge and short-circuit maintenance, and has very high insurance functions. The previous mobile power blasting incident was all caused by unscrupulous manufacturers' failure to apply the residual 18650 battery and even second-hand waste power to save money. At that time, the 18650 batteries produced by major battery manufacturers such as Panasonic, Sony, Samsung, etc. were actually very safe, and the application rate of the 18650 battery is very high. We may use the correct application in daily applications and avoid short circuits, damage or excessive temperatures, so we do not have to worry about the battery breaking. We cannot overturn a boat with one bamboo pole, and use individual residual products to characterize the insurance of 18650.The 650 battery also comes with a maintenance board, which has functions such as overcharge, overdischarge and short-circuit maintenance, and has very high insurance functions. The previous mobile power blasting incident was all caused by unscrupulous manufacturers' failure to apply the residual 18650 battery and even second-hand waste power to save money. At that time, the 18650 batteries produced by major battery manufacturers such as Panasonic, Sony, Samsung, etc. were actually very safe, and the application rate of the 18650 battery is very high. We may use the correct application in daily applications and avoid short circuits, damage or excessive temperatures, so we do not have to worry about the battery breaking. We cannot overturn a boat with one bamboo pole, and use individual residual products to characterize the insurance of 18650.
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