What is the difference between domestic and imported 18650 lithium-ion batteries?

Generally speaking, if you want to choose lithium power tools, in fact, one of the most concerned issues of most people should be lithium-ion batteries, and most people will be more inclined to choose imported lithium-ion batteries. The important reason is that this battery has a very obvious advantage compared with the current domestic battery. This is the biggest difference. The following will take you to understand the difference between domestic and imported 18650 lithium-ion batteries. Domestic imports of 18650 lithium-ion batteries 1. Production From a production point of view, the general imported and domestic 10 cells are relatively close to the battery voltage, and the test will be accelerated after full charge. After the test, the imported battery voltage is still the same, which is the most common with domestic batteries. Larger differences will occur, and the appearance of these differences tends to reduce the battery life, and the discharge in the entire production process is also easy to cause a fire hazard. Therefore, this production difference may be an important reason why the public chooses to import lithium-ion batteries. Second, the service life of the life battery itself is the shortest battery, and the domestic 18650 lithium-ion battery, even if it is produced under the same brand, it is a different batch, so there is a big difference in life, most imported batteries can Keep the same life. 3. Vibration damping performance Under normal circumstances, the anti-vibration performance test time of the battery is about 90 minutes. After such a test, we will find that the performance of the imported battery has not changed significantly. 50% of domestic batteries have internal circuits and cannot be used directly. The remaining 50% and 20% have too much internal resistance to be used, but in a battery pack, even if the above situation occurs, as long as there is one battery, the battery The battery cannot be used again, so in terms of vibration performance, foreign cells are better than domestic ones, so this is also the difference between domestic and imported 18650 lithium-ion batteries. 4. Self-discharge performance Under normal circumstances, the remaining capacity of the imported battery can reach 88% or more after the battery is left for one year. After charging, the capacity can be restored to 95%. However, for more domestic lithium-ion batteries, the longer the storage time, the greater the difference, and even the 20% battery capacity is directly reduced to below 70%, and it can only be restored to about 90% after charging. Low-temperature discharge performance Under low-temperature environmental conditions, the domestic 18650 lithium-ion battery cannot drive the machine, while the imported lithium-ion battery can still drive the machine under such relatively poor conditions. Although the working hours are not particularly long, compared with domestic batteries, this is still outstanding and outstanding. 6. The difference in capacity and output is also a huge difference between the two. A typical lithium-ion battery has a capacity of about 1200 mA, but a foreign battery can have a capacity of 5000 mA. Therefore, the differences and differences between domestic and imported 18650 lithium-ion batteries are relatively large. In general, it is also recommended that you choose imported batteries, but the price will definitely be more expensive, after all, it is not easy to import channels, the above content is for reference only. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it.