The general lithium battery certification is as follows:
EU: CE certification, ROHS certification, 206/66/EC
United States: FCC certification, UL certification, this can only be a model (different models to be certified separately), the price is more expensive
Japan: PSE certification
Korea: KC Certification
Taiwan: BSMI certification
Considering the safety aspect, some customers will do IEC62133, which is a safety test.
Transportation requires UN38.3+MSDS, which is required for both sea and air transport, especially now that battery management is becoming more stringent.