18650 battery 3.7v 2200mah

　　What is a low temperature battery?

　　"Low-temperature rechargeable battery" is a unique rechargeable battery developed to solve the low-temperature shortcomings of chemical power sources. Use VGCF as a preservative and a positive and negative material that is compatible with it, and add a certain amount of lithium battery electrolyte on the basis of VGCF, and use 2000M2/g (2000±1000m2/g) activated carbon as a preservative. , and equipped with unique additives to ensure the low-temperature charge and discharge function of low-temperature rechargeable batteries. At the same time, the 24-hour volumetric elasticity at 70°C is retained in the basic lithium battery, which has a safe storage function.

　　Many portable electronic devices also use a 36V working voltage. Compared with the 36V lead-acid batteries currently used in some electric vehicles, various portable electronic devices have been upgraded to use batteries that are lighter and have longer service life. Lithium batteries are commonly referred to as 36V lithium batteries. Whether it is a 37V lithium cobalt oxide battery. Or a single 32V lithium iron phosphate battery cannot be combined into 36V, only 37V or 384V. And our portable electronic products use wide operating voltages. For example, most electronic equipment using 36V has a specific operating voltage of 30-45V. Therefore, a 37V lithium cobalt oxide battery (with a working voltage range of 30-42V) or a 384V lithium iron phosphate battery (with a working voltage range of 30-42V) (30-438V) can be fully applied to most 36V electronic equipment and 36V electric vehicles.

　　Generally refers to lithium batteries with operating temperatures below -40°C. They are mainly used in aerospace, mobile weapons and equipment, scientific research and disaster relief, power engineering communications, public security and border defense, equipment manufacturing, railways, shipbuilding, service robots and other fields. According to different charge and discharge characteristics, low-temperature lithium batteries can be divided into energy storage low-temperature lithium batteries and multiple low-temperature lithium batteries. According to different uses, low-temperature lithium batteries can be divided into national defense, industrial low-temperature lithium batteries and low-temperature lithium batteries. According to different uses, it can be divided into three series of civilian low-temperature rechargeable batteries, special low-temperature rechargeable batteries, and extreme low-temperature rechargeable batteries.

　　Its main areas of integration include scientific research institutes ordnance, aerospace, missile-borne vehicle equipment, Arctic scientific expeditions, cold temperate rescue, power communications, information security management methods, equipment manufacturing, railways, ship design, service robots and other industries.

　　Features of low-temperature lithium batteries:

　　1. Excellent low-temperature operating characteristics: -40°C charging and discharging capacity exceeds the original capacity by 60%; -35°C charging and discharging capacity exceeds the original capacity by 70%;

　　2. Wide operating temperature range, -40℃ to 55℃;

　　3. Low-temperature lithium battery charge and discharge cycle test curve at -20°C. After 300 cycles, the volume maintenance rate is still higher than 93%.

　　Under the conditions of -40℃-55℃, the charge and discharge curves of low-temperature lithium batteries at different temperatures change significantly.

　　Disadvantages of low temperature lithium batteries:

　　1. The production and manufacturing process is difficult, and it must incorporate various types of difficulties. The absence of good samples will bring great difficulties to the research and development and manufacturing of lithium batteries.

　　2. Low-temperature lithium batteries can only be made to order, and the product is matched with a kind of rechargeable battery. Each rechargeable battery is different, and the cost of human resources, research, and manufacturing is high. Most small companies cannot accept it.

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