Lithium battery shipments keep being the reason a DHL parcel sits uncollected at customs. The rules are not changing — but carrier enforcement is. Here are the docs every battery shipment must carry in 2026, and the mistakes that still trigger returns.
The five documents carriers actually check
- UN38.3 test report — the battery has passed the UN test suite (altitude, thermal, vibration, shock, external short, impact, overcharge, forced discharge). Manufacturers issue this; the supplier must provide it per cell model
- Material Safety Data Sheet (MSDS) — current within 24 months; covers chemistry, handling, emergency response
- Shipper's Declaration for Dangerous Goods (DGD) — required for each consignment; carrier-specific form
- Packing compliance: PI 967 or PI 965 — Section II of the relevant Packing Instruction depends on whether batteries are packed with equipment (967) or alone (965)
- Consignee emergency contact — DHL requires a name and 24/7 reachable phone for destination customs in case of incident
Missing any one of these halts the shipment at origin or at destination customs.
Common mistakes that trigger returns
| Mistake | Cost | How to avoid |
|---|---|---|
| Old MSDS (>24 months) | Customs hold 5–10 days | Request refreshed MSDS from your supplier quarterly |
| UN38.3 missing for new cell revision | Shipment refused | Request test summary by cell model — every SKU |
| Mixed cells without segregation | Re-pack required | Each cell in its own foam slot inside an inner box |
| No consignee contact on waybill | DHL rejects at booking | Always include a phone number that answers 24/7 |
| Battery + accessory misclassification | Customs re-classifies | Declare battery content percentage and watt-hour rating |
What scrnfix.store ships automatically
Every wholesale battery shipment from our Shenzhen warehouse includes UN38.3, MSDS, and a properly completed DGD for the destination. Same paperwork structure per cell model. As a buyer this means less paperwork on your end — but you still need to provide a working 24/7 contact for the destination broker.
FAQ
Can I ship batteries by air freight without DHL? Most battery shipments outside of pallet sea freight still go via express carriers. FedEx and UPS accept similar documentation; not all lanes accept batteries at all.
How long is a UN38.3 valid? For the cell model — indefinitely, as long as the cell design has not changed. Some carriers re-validate every 24 months by checking the report date.
What about power banks? Power banks ship under PI 965 alone but require additional watt-hour labelling. They are not in the battery collection scope.