Verifying UN 38.3 Test Summaries for Imported Cells
Verify UN 38.3 test summaries by matching technical report fields against accredited lab databases, factory trace codes, and physical SOC transport limits.
Shock Test
Meaning
Mechanical testing regimes that subject battery cells or modules to high-acceleration, short-duration pulses simulate the impact forces experienced during shipping and operational collisions. This shock test measures whether the internal electrode tabs, welded joints, and external terminals can withstand sudden forces without cracking or short-circuiting. This test is applied to prototype cells and production samples, stopping when the test profile is complete or when the cell fails.
Sourcing specialists review these results to ensure the cells can survive rough roads and transport.
Impulse Profile
The test applies a series of half-sine shock pulses, often reaching fifty times the force of gravity, in three directions. Accelerometers measure the forces to ensure the cell experiences the exact test profile.
Failure Mechanism
Sudden mechanical forces can break the delicate welds that connect the internal electrode sheets to the terminal tabs. If these welds break, the cell will lose electrical contact and fail, or it will create an internal short-circuit that leads to a fire. Sourcing agreements require cells to pass these tests to ensure they will not become safety hazards after a minor vehicle collision or a drop during shipping.
This reduces the risk of expensive warranty recalls.
Safety Approval
Passing this mechanical test is required to get UN38.3 certification for shipping. Without this approval, the cells cannot be transported legally by air or sea, which halts the global supply chain.