Advantages and disadvantages of 18650 battery

The number 18650 in the lithium battery 18650 means the external size of the battery: 18 refers to the diameter of the battery, 65 refers to the height of the battery, and 0 refers to the cylindrical shape. The general 18650 battery is divided into lithium battery, lithium iron phosphate battery and nickel hydrogen battery. The capacity of Ni-MH batteries is generally 2500MAH, and the capacity of lithium batteries is generally 1200MAH-3100MAH. Lithium battery pack (Li-ion, LithiumIonBattery): Lithium battery is widely used because of its light weight, large volume, and no memory. Many digital products use lithium battery as switching power supply, although its price is relatively expensive . The specific energy of the rechargeable battery is very high, and its volume is twice the specific energy of the nickel-hydrogen rechargeable battery of the same net weight, and the life rate of the lithium battery is extremely low. In addition, lithium batteries basically do not have 'memory' and do not have the advantages of toxic substances, which are the key reasons for their widespread use. It is also important to note that lithium batteries are generally marked in English with 7.2Vlithiumionbattery (lithium battery) or 7.2Vlithiumsecondarybattery (lithium secondary battery), 7.2Vlithiumionrechargeablebattery (battery rechargeable battery), so customers must recognize the rechargeable battery when purchasing rechargeable batteries. The logo of the case to prevent the nickel-cadmium and nickel-hydrogen rechargeable batteries from being mistaken for lithium batteries because they did not recognize the type of rechargeable batteries. The basic theory of the service life of the 18650 battery is 1000 cycles of system battery charging. In addition, because 18650 has excellent working reliability, it is widely used in various electronic device industries, such as: high-end glare flashlight, portable switching power supply, wireless network transmission data device, electric heating thermal underwear, shoes, Portable instrument equipment, portable lighting fixtures, portable copiers, industrial processing equipment, medical equipment, etc. Advantages: 1. The volume of a large 18650 lithium battery is generally between 1200mah~3100Mah, while the general battery power is only about 800. If it is integrated with the 18650 lithium battery, the 18650 lithium battery can easily increase 5000Mah. 2. The 18650 lithium battery has a long service life, and the service life of all normal application cycle systems is more than 500 times, which is more than twice the number of cycles of ordinary batteries. 3. High safety factor 18650 lithium battery, high safety factor, no explosion, no ignition; non-toxic, zero pollution, according to RoHS certification; various safety factors can be used with peace of mind, the frequency of the circulation system exceeds 500 times; heat resistance characteristics Good, the charging and discharging efficiency reaches 100% under the 65 degree standard. In order to better guard against short-circuit failures of rechargeable batteries, 18650 lithium batteries are divided into two levels, positive and negative. Therefore, the probability of short-circuit fault conditions has been minimized. A rain shield can be added to guard against overcharging and losing power of the rechargeable battery, which can also extend the life of the rechargeable battery. 4. The working voltage of lithium 18650 high-voltage rechargeable batteries is generally acceptable, and is far higher than the working voltage of nickel-cadmium batteries and nickel-hydrogen rechargeable batteries. 5. There is no memory, no need to empty the remaining power before the battery is charged, which is convenient to use. 6. Small internal resistance: The internal resistance of polymer batteries is smaller than that of ordinary liquid lithium batteries. The internal resistance of domestic polymer batteries is even below 35mΩ, which greatly reduces the self-consumption of rechargeable batteries and adds mobile phones. The battery life on the mobile phone can completely connect with the international. The polymer lithium battery is suitable for high-current charging and discharging. It is an ideal choice for remote operation and is the most likely product to replace Ni-MH rechargeable batteries. 7. It can be connected in series or in parallel to form a 18650 lithium battery. 8. Notebooks, wireless walkie-talkies, portable DVDs, instrumentation equipment, professional audio equipment, model airplanes, small toys, surveillance cameras, digital cameras and other electronic products are commonly used in the application field. Disadvantages: For the 18650 type lithium battery, the major drawback is that its volume is fixed, and it is not suitable for installation on some notebooks or some commodities. Naturally, this defect can also be said to be an advantage, which is relatively different from others. This is a defect of customizable and convertible specifications. Compared with some products of specific rechargeable battery specifications, this has become an advantage. Compared with general rechargeable batteries, 18650 lithium batteries are more prone to short-circuit failures, explosions and other safety accidents. If the relative general rechargeable batteries, such shortcomings are not so significant. Processing and manufacturing 18650 lithium batteries must have maintenance routes to guard against excessive charging and discharging of rechargeable batteries. This is naturally all necessary for lithium batteries, and this is also one of the defects of lithium batteries, because most of the raw materials used in lithium batteries are lithium cobalt oxide batteries, and lithium cobalt oxide battery raw materials cannot carry out high-current charging. Discharge, the safety factor is weak. The battery cathode materials include lithium nickelate, lithium manganate batteries, lithium ternary acid, lithium iron phosphate, etc. The battery cathode materials are generally amorphous carbon materials, graphitized carbon materials, silicon-based raw materials, nitrogen compound raw materials, and new aluminum alloys. Wait. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. 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