A client came to us after three rejections elsewhere: “Bluetooth earphones count as dangerous goods? Then how does the whole world’s supply of earphones fly?” Declared properly — that is how. Lithium-battery air freight was never a question of whether it can fly; it is whether you treat it as the regulated cargo it is.
Classify first: which battery is yours
The strictness depends on how the battery exists in the shipment. Air transport sorts lithium batteries into UN numbers; two pairs cover most cases:
- Batteries shipped alone (UN3480 lithium-ion / UN3090 lithium-metal): strictest tier. Standalone lithium-ion cells face state-of-charge limits, cargo-aircraft-only restrictions on some lanes, and full dangerous-goods packaging, marking and documentation
- Batteries in or packed with equipment (UN3481 / UN3091): lighter tier. Laptops, earphones and power tools mostly land here, and small cells meeting the conditions ship under simplified provisions — but “lighter” never means “undeclared”; marks and documents remain mandatory
One order carrying “machine plus spare batteries” often spans both numbers — classify line by line, never blanket a shipment under one code. A battery-bearing product is ordinary, declarable commercial cargo — tell your shipping desk exactly that.
The three-document set: what each proves
1. The UN38.3 Test Summary. Proof the cell passed the UN safety test series (altitude, thermal shock, vibration, external short and more). Issued by the battery manufacturer, tied to the model — change supplier or model and the document changes. Request it before booking; many Taiwanese assemblers source it upstream from the cell maker, so allow time.
2. The MSDS/SDS. Declares composition, hazards and emergency handling — the basis on which carriers and ground handlers decide acceptance and stowage. Also manufacturer-issued; check the version is current and matches the shipped model — an old model’s SDS standing in for the new one is the most common inspection break.
3. The transport conditions certificate (when required). Some carriers and lanes require an accredited-lab appraisal confirming the UN number and packing class. Whether it is needed follows the carrier — which is exactly why battery details go to your forwarder honestly at booking; sourcing this paper late costs working days.
Beyond documents, the hardware: lithium-battery marks, hazard labels, compliant packaging — executed at the packing end and photographed before shipping, saving long arguments at inspection.
The price of hiding: not a fine — a blacklist
Some think “one small battery, ship it as general cargo.” Understand the scale: lithium thermal runaway is a real source of onboard fire, and airlines run zero tolerance on undeclared dangerous goods. The consequences stack: the shipment offloaded, the allocation disrupted, penalties — and shipper and forwarder entered into the airline’s blacklist, every future shipment flagged for enhanced screening. You burn your own air corridor. And it is the physical safety of everyone on that aircraft. If document lead time is the problem, move to a slower channel — never hide the battery.
The pre-shipment checklist
- Classify every part number: standalone or in equipment? Which UN number?
- Obtain the model-matched UN38.3 summary and current SDS from the manufacturer
- Declare the battery configuration honestly at booking; let the carrier rule on the conditions certificate
- Execute marks, labels and packaging to spec; photograph everything
- On billing: dangerous-goods handling fees apply, and chargeable weight still takes the greater
Where SKYCARGO fits
SKYCARGO INC ships battery cargo declared — classification checked line by line, the document set collected before booking, packaging specs confirmed with the packer. Tell us the product and battery configuration and we will reply with the document list and lane options. (Personal parcels: Shiptw.)
IATA and carrier dangerous-goods provisions update annually; current carrier rules govern. Reference only.
