Many smart home products contain built-in lithium-ion batteries, whose cross-border transport is subject to strict aviation safety regulations. New rules in 2026 have further raised compliance thresholds.
IATA DGR 67: Mandatory State-of-Charge Cap
According to the IATA Dangerous Goods Regulations Edition 67 (effective Jan 1, 2026), as referenced by China’s Ministry of Commerce WTO Advisory Network, the state-of-charge (SoC) requirement for lithium battery air transport has been upgraded from a recommendation to a mandatory limit of 30% or below. This applies to standalone lithium-ion batteries (UN3480) and batteries packed with equipment (UN3481). Only batteries installed in equipment (UN3482) may exceed 30% SoC.
Additionally, UN38.3 Testing Revision 8 is now globally mandatory, invalidating older test reports and adding combined temperature cycling and mechanical shock test requirements.
Energy Rating and Transport Restrictions
Lithium-ion batteries rated at ≤100Wh can be shipped via standard passenger aircraft channels; those rated 100–160Wh require written airline approval; those >160Wh are prohibited on passenger aircraft. This means cross-border shipping options for large energy storage devices or high-capacity batteries are more limited.
USPS Surcharge
Starting July 12, 2026, USPS imposes a $7.50 handling surcharge on packages containing lithium batteries, further increasing cross-border logistics costs for small lithium battery products.
Why State-of-Charge Limits Matter
The aviation safety rationale behind SoC limits is that lithium batteries exhibit lower thermal stability at higher charge levels. In the event of a short circuit or physical damage, a highly charged battery is more likely to trigger thermal runaway and cause a fire. Keeping SoC below 30% significantly reduces safety risks during transport. Previously, this requirement was merely a recommendation, and some shippers may not have strictly complied. With the upgrade to mandatory status, airport security and carriers have the authority to reject non-compliant packages, meaning non-compliant shipments will directly result in logistics disruptions.
The simultaneous mandatory enforcement of UN38.3 Rev.8 further tightens testing standards. Older test reports are no longer valid, and manufacturers must re-test under the new standard, including the newly added combined temperature cycling and mechanical shock tests. The supply chain impact is that during the transition between old and new versions, some products may temporarily be unable to ship by air due to expired test reports.
Impact on Consumer Delivery Timelines
These regulations mean that smart hardware containing lithium batteries may require longer processing times and higher logistics costs for cross-border shipping. Compliant shipping is essential for delivery timeliness and safety—non-compliant packages may be rejected at airports or held by customs, causing delays or even returns.
Specifically, consumers ordering products with lithium batteries should anticipate the following possible impacts:
- Pre-shipment preparation time: Sellers need to discharge batteries below 30% and confirm valid UN38.3 Rev.8 test reports, which may extend pre-shipment preparation
- Logistics costs: USPS surcharges and compliant packaging requirements may increase shipping fees
- Shipping channel limitations: Products rated above 100Wh have more limited transport options, potentially resulting in longer delivery times
Our shipping arrangements comply with applicable transport regulations. For specific shipping timelines and restrictions, see our Shipping Policy. For return coverage, see our Refund and Return Policy.
Information current as of September 2026. Please refer to official sources for the latest updates.
Sources
- IATA Lithium Battery Guidance Document (DGR 67), 2026-01-01, https://www.iata.org/contentassets/05e6d8742b0047259bf3a700bc9d42b9/lithium-battery-guidance-document.pdf
- China Ministry of Commerce WTO Advisory Network, 2025-12, https://chinawto.mofcom.gov.cn/article/jsbl/zszc/202512/20251203610162.shtml