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Generally speaking, if you want to choose lithium electric tools, in fact, one of the most concerned issues of most people should be lithium ion batteries, and most people would prefer to choose imported lithium ion batteries. The important reason is that this battery has a very obvious advantage compared with the current domestic battery, which is the biggest difference. The following will show you the difference between domestic and imported 18650 lithium ion batteries.

18650 lithium-ion battery imported from China

1、 Production

From the perspective of production, generally 10 imported and domestic batteries are relatively close to the battery voltage, and the test will be accelerated after being fully charged. After the test, the imported battery voltage is still consistent, and there will be greater differences between the imported and domestic batteries, and the occurrence of these differences will often reduce the battery life, and discharge in the entire production process is also easy to cause fire hazards. Therefore, this production difference may be an important reason why Volkswagen chooses to import lithium-ion batteries.

Second, life

The service life of the battery itself is determined by the shortest battery, and the 18650 lithium-ion battery in China is produced in different batches even under the same brand, so there are great differences in life. Most imported batteries can maintain the same life.

3. Damping performance

Generally, the anti-vibration performance test time of the battery is about 90 minutes. After such tests, we will find that the performance of imported batteries has not changed significantly. Compared with domestic batteries, 50% of them have internal circuits and cannot be used directly. The remaining 50% and 20% of them 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 pack cannot be used again. Therefore, in terms of vibration performance, foreign cells are more than domestic ones, so this is also the difference between domestic and imported 18650 lithium-ion batteries.

4. Self-discharge performance

Generally, after one year of storage, the remaining capacity of imported batteries can reach 88% or more. After charging, the capacity can be restored to 95%. However, more lithium-ion batteries in China may be stored for a longer time, and the difference will be greater. Even 20% of the battery capacity will be directly reduced to less than 70%, and can only recover to about 90% after charging.

Low temperature discharge performance

In low temperature environment, the battery of domestic 18650 lithium-ion battery cannot drive the machine to work, while the imported lithium-ion battery can still drive the machine to work under this relatively poor condition. Although the working hours are not particularly long, this is still outstanding compared with domestic batteries.

6. Ability,

The difference in output is also a huge difference between the two. The capacity of a typical lithium-ion battery is about 1200 mA, but the capacity of a foreign battery can reach 5000 mA.

Therefore, the difference between domestic and imported 18650 lithium-ion batteries is relatively large. In general, it is also recommended that you choose imported batteries, but the price will be more expensive. After all, the import channel is not easy. The above content is for reference only.

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