The difference between 18650 battery and AA battery

The difference between 18650 battery and AA battery is mainly reflected in the size. AA battery is also called AA battery, scientific name is 14500 battery. Through 18650 battery and 14500 battery, we can see that the size of the two batteries is obviously different, the two models All batteries have lithium battery cells. Generally speaking, 18650 batteries are lithium batteries, while AA batteries usually refer to alkaline or carbon disposable batteries; what is 18650 batteries; Japan’s SONY company decided in order to save costs. The following standard lithium-ion battery model, where 18 indicates a diameter of 18mm, 65 indicates a length of 65mm, and 0 indicates a cylindrical battery. What is AA battery; AA battery is also called AA battery, scientific name is 14500 battery, and 18650 battery has obvious size difference. What is the difference between 18650 battery and AA battery? The 18650 lithium battery is obviously different from the AA/AAA (also called No. 5/7) batteries we usually use! 18650 is not a number of batteries, but A type batteries, 18mm in diameter, generally lithium batteries. AA battery is one of the battery types, which generally refers to the size of 14mm in diameter and 49mm in height. The voltage of the 18650 lithium battery is generally around 3.5~4.0V, the most common is 3.7V; and the voltage of the No. 5 battery is 1.5V (non-rechargeable) or 1.2V (rechargeable). The difference between 18650 lithium battery and AA battery: 1. The size is different. Although the 18650 and AA batteries look similar, the sizes of the two are actually different. The 18650 lithium battery has a diameter of 18 mm and a length of 65 mm; and the AA battery (actually, the scientific name of the AA battery is 14500 battery. Also called AA battery) the rule is 14 mm in diameter and 50 mm in length. The 18650 is much larger than the AA battery in terms of length and diameter. 2. The voltage is different. The voltage of the lithium battery is generally around 3.5~4.0V, the most common is 3.7V; and the voltage of the No. 5 battery is 1.5V (non-rechargeable) or 1.2V (rechargeable). 3. Its working principle (internal chemical reaction process) is different. 4.18650 is a rechargeable battery, most of the ordinary AA batteries are disposable batteries, with few or no rechargeable ones. What are the advantages of 18650 lithium batteries? 1. The capacity of 18650 lithium battery with large capacity is generally between 1200mah and 3600mah, while the general battery capacity is only about 800mah. If combined into a 18650 lithium battery pack, the 18650 lithium battery pack can easily exceed 5000mah. 2. Long life 3. High safety performance 18650 lithium battery has high safety performance, no explosion, no burning; non-toxic, non-polluting, and has passed RoHS trademark certification; all kinds of safety performance are integrated in one go, and the number of cycles is more than 500 times; high temperature resistance performance, The discharge efficiency reaches 100% at 65 degrees. In order to prevent the battery from short-circuiting, the positive and negative electrodes of the 18650 lithium battery are separated. Therefore, the short-circuit phenomenon may have been reduced to the extreme. A protection board can be installed to avoid overcharge and overdischarge of the battery, which can also extend the service life of the battery. 4. High voltage 18650 lithium battery voltage is generally 3.6V, 3.8V and 4.2V, much higher than the 1.2V voltage of nickel-cadmium and nickel-hydrogen batteries. 5. There is no memory effect. It is not necessary to empty the remaining power before charging, which is convenient to use. 6. Small internal resistance. 7. Can be combined in series or parallel to form 18650 lithium battery pack. 8. Wide range of use: notebook computers, walkie-talkies, portable DVDs, instrumentation, audio equipment, model airplanes, toys, camcorders, digital cameras and other electronic equipment. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What kind of battery is 18650 battery?