Safety is paramount for high-voltage batteries. Ensure the supplier provides UN38.3 test reports, which are mandatory for air and sea transport. For market entry, look for UL2271 (for light electric vehicles), CE-LVD, and RoHS certifications. A high-quality 60V battery should feature a Smart BMS that provides protection against overcharge, over-discharge, short circuits, and thermal runaway. Requesting a cell grading report (ensuring Grade A cells) is a professional way to filter out low-quality suppliers.