To ensure legal entry and operational safety, verify that the products carry CE (LVD/EMC) certification for the European market or UL 1741 for North America. For global safety benchmarks, look for IEC 62109-1/2 compliance. It is also mandatory to ensure the supplier provides RoHS certification, confirming the absence of hazardous substances. Always request test reports from accredited third-party labs to validate that the internal protection mechanisms—such as Overload, Short Circuit, Over-temperature, and Battery Reverse Polarity protection—are fully functional.