How to judge the quality of electric vehicle batteries?

Electric vehicle batteries are the source of power in electric vehicles, so the quality of the batteries is very important to electric vehicles. There are the following methods to distinguish the quality of the battery of an electric vehicle: 1. Judge whether the battery is new or old through the outer packaging of the battery: (1) Check whether the outer packaging is damaged or has been disassembled; (2) Check the appearance of the battery itself and observe whether There are scratch marks and rust on the terminals of the positive and negative poles; (3) Check whether there are anti-counterfeit labels on the battery shell, whether the processing date is relatively old, whether the manufacturer's relevant information signs are complete, and whether the writing is clear and complete. If there is 1 point or more in the external packaging of the battery, it is considered that the battery is an old battery, and the quality may be problematic. 2. Check the quality of the battery during the trial run. Install the newly fully charged battery on the electric vehicle, start the electric vehicle power supply, and suddenly accelerate the electric vehicle during driving, and observe the change of the electricity meter pointer: (1) Accelerate riding If the pointer of the electricity meter drops less than half a grid during the ride, it is judged that the battery is brand new or has good performance; (2) The pointer of the electricity meter drops 1 or even 2 grids during acceleration. , It is judged that the battery is old or of poor quality; (3) When the pointer of the charge gauge drops 3 or 4 bars during acceleration, it is judged that the battery is a product of a fake new battery after being repaired by a scrapped battery , The quality is extremely poor. 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 are the factors that affect the life of ternary lithium batteries?