Section 38.3 of the United Nations Manual of Tests and Criteria specifies lithium battery transport safety testing, including altitude simulation, temperature, vibration, impact, and external short circuit tests. Batteries must pass these tests before they can be shipped. When shipping, you must be able to provide the test summary. This document is provided by the battery manufacturer.
Full explanation and HS code list: https://patisco.com/zh/eu-check/lithium-battery-shipping Use HS codes to check which EU regulations apply to you: https://patisco.com/zh/eu-check