Shipping lithium batteries to Iran carries a higher compliance bar than general cargo, and the questions we get most often are the same three: which documents are actually required, what each one does, and how long it stays valid. Behind them sits a fourth: why one shipper passes while another is refused. This article explains the four core documents, the difference between cells shipped on their own and batteries inside equipment, how the rail and road carrier thresholds differ, the usual refusal reasons, and a seven-day pre-shipment checklist.
1. Why lithium batteries count as sensitive cargo
The electrolyte in a lithium cell is flammable, and under extreme conditions a cell can go into thermal runaway from a short circuit, a crush or high temperature. Rail, road and air each impose their own packing, labelling and documentation requirements on lithium batteries, which means they cannot be handled as ordinary cargo or treated approximately as such.
The compliance core reduces to one sentence: prove with documents that the consignment is safe under transport conditions, and make the packing, the labels and the declaration agree with each other. The four documents below are the body of that proof. The overall arrangement for a rail FCL move to Iran is covered under China to Iran rail freight (FCL).
2. The four core documents and what each one does
These four are often spoken of as one bundle, but each covers a different part of the proof, and a missing one can stop the shipment at the carrier or at customs.
| Document | What it does | Validity and updating |
|---|---|---|
| UN38.3 test summary | Shows the cell or battery passed the UN safety tests | Tied to the model; a report within about two years is normally expected, and a design change means retesting |
| MSDS | Sets out composition, hazardous properties and emergency handling | A version within about three years is normally expected |
| Transport condition report | An assessment body decides whether the goods travel as general or dangerous cargo | Usually valid for one year; refreshed by batch or by model |
| Lithium battery declaration | The shipper declares the goods meet transport conditions and that packing and labels comply | Issued per shipment, and stays with the goods |
Two points are worth holding on to. The UN38.3 report and the transport condition report are both tied to a specific model, so a model change means the file has to be matched again. An expired report, or one that does not match the model on the box, is the single most common reason a shipment is refused.
3. Standalone cells versus batteries in equipment
The same lithium batteries, shipped on their own or installed in equipment, fall under different UN numbers and different packing rules. The table aligns the difference.
| Case | Usual UN number | Packing and class | Labels and marks |
|---|---|---|---|
| Cells or batteries shipped alone | UN3480 | Packing instruction II applies, with limits on net weight per package and capacity per cell | Lithium battery handling mark plus class 9 label |
| Contained in equipment | UN3481 | Packing requirements are lighter, but the equipment must be protected against short circuit and accidental operation | Depending on capacity, the handling mark alone may be enough |
| Packed with equipment | UN3481 | The battery and the equipment must be prevented from striking each other or shorting | Handling mark; the class 9 label may be waived below the capacity threshold |
The short version is that batteries shipped on their own face the strictest rules, while batteries inside equipment, or packed with it, are treated more lightly. Whether a particular model qualifies for the exception has to be settled from the transport condition report and the current carrier requirements, not from experience.
4. How rail and road carrier thresholds differ
The two modes are not equally willing to accept the cargo. On rail, cells or batteries shipped on their own are often declined, and in most cases only goods contained in equipment, or packed with it, are accepted; even then the cargo information has to be reported to the railway in advance so that wagon or container conditions can be confirmed. Road FTL is more flexible in scheduling, but it does not relax the qualification, packing and documentation requirements.
So before choosing a mode, settle whether the consignment is batteries shipped alone or batteries with equipment. The road thresholds and vehicle types are described under China to Iran road freight (FTL), and the fuller class and document requirements are in the lithium battery and dangerous goods guide.
5. Why shipments are refused
Refusal is usually not about the goods but about the file. The common cases are an expired UN38.3 report or one that does not match the model, a transport condition report older than a year, packing that does not meet the applicable packing instruction, a missing or wrongly placed lithium battery handling mark or class 9 label, a declaration that was not made or that does not match the load, and a packing list, invoice and declaration that disagree on quantity or weight. All of these are visible before dispatch.
6. A seven-day pre-shipment checklist
Working through these seven steps in the week before dispatch removes most of the last-minute failures.
- Confirm the product model and its UN number, and decide whether the batteries travel alone or inside equipment.
- Check all four documents are valid and match the model, and reissue any expired.
- Confirm the packing meets the applicable packing instruction, and prepare the handling mark and the class 9 label.
- Align commodity, quantity, net weight and per-cell capacity across every document.
- Report the cargo information to the carrier in advance and confirm whether the class is accepted at the current time.
- Confirm whether the destination imposes any additional requirement on lithium battery imports.
- Assemble the travelling documents so that the transport declaration stays with the goods.
Get current rates and transit times
Send us the battery model, UN number, per-cell capacity and net weight, the packing method, the origin city and the destination. We will return a comparison built on the current rail and road carrier conditions, with a validity window, and a note on which mode the consignment should move under.
7. Frequently asked questions
Does a UN38.3 report have an expiry date?
The report is tied to the product model, so it has no fixed expiry date, but carriers normally expect a version issued within the last two years. If the product design changes, the battery has to be retested and the report updated before shipping.
What is the difference between shipping cells alone and shipping them in equipment?
Cells or batteries shipped on their own are normally UN3480, with the strictest packing and labelling requirements; batteries contained in or packed with equipment fall under UN3481, where the conditions are lighter. Which one applies is settled by the transport condition report and the carrier requirements.
Can lithium batteries packed on their own travel by rail?
In most cases they are not accepted; rail usually takes only goods contained in equipment or packed with it, and the cargo must be reported in advance. If a consignment genuinely has to move, confirm with the carrier as early as possible.
Related lanes
- Lithium battery and dangerous goods guide — classes, packing and document requirements
- China to Iran rail freight (FCL) — rail carriage conditions and corridors
- China to Iran road freight (FTL) — the more flexible carriage option
- China to Iran sea freight — the choice for large volumes on a flexible schedule