1. The fastest inspection method is to test the internal resistance and maximum discharge current. A high-quality lithium battery has a very small internal resistance and a large maximum discharge current. Using a 20A range multimeter, directly short circuiting the two electrodes of a lithium battery, the current should generally be around 10A or even higher, and can be maintained for a period of time. A relatively stable battery is a good one. 2. Look at the appearance. The fullness of the appearance, such as a typical 2000mAh lithium battery, is relatively large in size. The workmanship is relatively fine or the packaging appears relatively plump. 3. Look at the hardness. You can gently or moderately pinch the middle part of a lithium battery with your hand. If the hardness is moderate and there is no soft squeezing feeling, it proves that a lithium battery cell is a relatively high-quality battery cell. 4. Look at the weight. Remove the outer packaging and feel if the battery weight is relatively heavy. If it is thick and heavy, it belongs to high-quality battery cells
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China