What are the differences between domestic and imported 18650 lithium-ion batteries?

From a processing point of view, generally imported batteries with a voltage close to the domestic 10-cell battery will undergo accelerated testing after being fully charged. After testing, the imported battery voltage is still the same, while domestically produced batteries The vast majority of batteries will have relatively large differences, and the appearance of such differences tends to quickly reduce the battery's endurance. During the entire discharge process, it is also easy to cause fire hazards and hidden dangers. Therefore, this difference in processing is probably the most important reason why the public chooses to import lithium-ion batteries. 2. The service life of the battery itself is determined by the shortest battery, and the domestic 18650 lithium-ion battery is processed by the same brand even if it is processed by the same brand, but it is also a different batch, so it also has a lifespan. The big difference is that most of the imported batteries can maintain the same life span. 3. Anti-vibration performance Generally, the anti-vibration performance test of the battery takes about 90 minutes. After such a test, we will find that the imported battery has no significant changes in performance. And 50% of the domestic batteries have been internally disconnected, even causing them to be directly unusable, and 20% of the remaining 50% have too much internal resistance to be used, but in a battery pack, even if there is only one battery In the above situation, there is no way to use the entire battery pack again, so in terms of vibration performance, foreign batteries are still better than domestic ones, so this is also the difference between domestic and imported 18650 lithium-ion batteries. 4. Self-discharge performance Generally, after a battery has been placed for a year of inactivity, the remaining capacity of the imported battery is basically above 88%. After charging, the capacity can also be restored to 95%. And for more domestic lithium-ion batteries, the longer they may be stored, the greater the difference will be. Even 20% of the battery cell capacity directly drops below 70%, and it can only be restored to about 90% after recharging. 5. Low-temperature discharge performance. In the low-temperature environment, the batteries of the domestic 18650 lithium-ion battery have no way to drive the machine to work, and the imported lithium-ion battery may still be able to work under such relatively harsh conditions. Drive the machine to work. Although the working hours will not be particularly long, this is still more outstanding and outstanding compared to domestic batteries. 6. The difference in capacity is also a big difference between the two. The capacity of a general lithium-ion battery is about 1200 mA, but foreign ones can break through this limit and reach 5000 mA. 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: Why is a small car more suitable for lithium-ion phosphate batteries?