Meaning
Lithium battery exemption provisions define the specific safety thresholds under the IMDG code where small secondary cells and batteries escape full regulatory cargo requirements. The imdg sp 188 regulation permits shippers to transport lithium metal or lithium ion cells without applying standard dangerous goods labeling provided each unit meets precise energy capacity limits and structural testing criteria.
Transport Waiver
Documentation and packaging standards reduce the logistical burden for small-scale energy storage devices that present limited thermal risk during transit. Under imdg sp 188 guidelines, packages containing these items require external marking to indicate the presence of lithium cells but do not demand the full suite of class 9 hazardous materials declarations typically imposed on high-capacity energy products.
Capacity Threshold
Energy density limits restrict the scope of this exemption to cells with a watt-hour rating not exceeding 20 wh for cells or 100 wh for batteries. Each individual battery model undergoes verification according to specific manual of tests and criteria protocols to ensure the internal chemistry remains stable under simulated high altitude, thermal shock, vibration, and short circuit conditions.
Safety Provision
Compliance with this protocol necessitates the protection of battery terminals against contact or short circuits while ensuring each package withstands a drop test from a height of one point two meters without contents igniting or leaking. Failure to maintain these structural integrity standards during transport renders the exemption void and mandates full dangerous goods classification for the shipment.
