To check if the electric vehicle battery is new, the following methods can be used:
1. Observe appearance and details: Check whether the battery casing is intact, without scratches, wear or impact marks. The shell of a new battery is usually smoother and has a uniform color. Observing the wiring terminals, the wiring terminals of the new battery should be bright and have no obvious polishing marks. Refurbished batteries may have residual solder or uneven color re filling marks. Pay attention to the production date and anti-counterfeiting label of the battery. The production date of the new battery is relatively recent, and the anti-counterfeiting label is complete and easy to verify. Authenticity verification can be carried out by scraping off the password coating or scanning the QR code.
2. Check packaging and labeling: Genuine new batteries usually have specific packaging, such as yellow packaging, and there will be clear brand identification and production information on the packaging. Pay attention to whether there are user manuals, warranty cards, and other accessories inside the packaging, which are also important signs of new batteries.
3. Conduct performance testing: If conditions permit, professional battery capacity testers or internal resistance testers can be used to test the battery. The capacity and internal resistance of the new battery should comply with the standard range specified by the manufacturer. Observing the charging and discharging curve of the battery, the new battery should exhibit stable performance during the charging and discharging process, without any abnormal fluctuations or sharp drops.
The above methods are for reference only and cannot fully guarantee the absolute accuracy of the judgment. If you have doubts about the age of the battery, it is recommended to go to a regular electric vehicle sales point or repair shop for consultation and testing. At the same time, when purchasing electric vehicle batteries, one should choose legitimate channels and brands to avoid purchasing refurbished or inferior products.