Lithium batteries remain the highest-scrutiny cargo in air freight. Every year, IATA’s Dangerous Goods Regulations (DGR) tighten the packing, marking, and documentation rules — and every year, Miami-based shippers get bounced at MIA cargo screening for the same handful of mistakes. Here’s the 2026 landscape, distilled.
What Changed in the 2026 DGR
The 67th edition of the DGR (effective January 1, 2026) carried forward the harmonized packing instructions from the previous cycle but tightened three areas:
PI 965 and PI 968 (lithium ion and lithium metal shipped by themselves). State of charge (SoC) caps for lithium ion at 30% remain, and enforcement has become more consistent — carriers are now checking SoC declarations at acceptance, not just at random.
Damaged, defective, and recalled (DDR) batteries. Still forbidden on passenger aircraft, and cargo aircraft acceptance requires a competent-authority approval. In 2026, several major airlines have narrowed the pool of carriers willing to accept DDR shipments at all.
Label size enforcement. The lithium battery mark must be at least 100 mm × 100 mm (or 100 mm × 70 mm on small packages). Miniature “close enough” labels are getting rejected.
The Section II Trap
Small consumer-quantity shipments under Section II of PI 967 and PI 970 are still exempt from full DG paperwork, but they are NOT exempt from packaging performance, package limits, or handling labels. Half the Miami-area rejections we see are Section II shipments where the shipper assumed “exempt” meant “no rules.”
Documentation Discipline
For a compliant lithium battery air shipment in 2026, you need — at minimum — a properly completed Shipper’s Declaration for Dangerous Goods (unless a Section II exception applies), UN specification packaging in good condition, correct UN number and proper shipping name, correct handling and hazard labels, and airline-specific state variations checked (many carriers add restrictions beyond IATA baseline).
State and Operator Variations to Watch
Several US carriers operating out of MIA have added operator variations for 2026 restricting lithium metal cell shipments above certain watt-hour thresholds even under PI 968 Section IA. Check the variation index in the DGR before booking, not after.
The Miami Angle
MIA is one of the busiest cargo airports in the hemisphere for LATAM-bound freight, and lithium batteries in consumer electronics, medical devices, and e-mobility products move through it daily. The screening tolerance at MIA cargo is not lower than elsewhere — but the volume means the number of rejections is high, which drives training investment across the local forwarder community.
Bottom Line
Lithium battery shipping is one of the areas where a small mistake creates a big problem — a rejected shipment, a fine, or worse, a safety incident. Go-Freight’s mobile hazmat compliance team supports Miami-area shippers with on-site auditing, packing supervision, and documentation review calibrated to the current DGR edition and the specific carriers you use.