IEC 62133-2: portable rechargeable lithium battery safety

IEC 62133-2 specifies safety requirements and tests for portable sealed secondary lithium cells and batteries. It is widely used internationally, often via the IECEE CB Scheme.

Typical tests

Continuous charging, external short circuit, free fall, thermal abuse, crush, overcharge and forced discharge — clause list depends on edition.

Standards scope summaries only. Test reports, certifications and transport classification are different outcomes; editions and market requirements change.