Small-Quantity Lithium Battery Shipping: Compliance Tips

Mitigate thermal runaway, carrier rejection, and regulatory penalties

When your warehouse moves even small quantities of lithium batteries, compliance failures can stop shipments or trigger carrier rejection. They also increase the risk of thermal runaway during transit and regulatory enforcement actions.

This guide walks logistics, compliance, and operations teams through PI‑965, PI‑966, and PI‑970 across air, ground, and ocean. You’ll get practical pre-shipment checks, packaging and marking musts, and operational controls to stay audit-ready. For air shipments, consult the current IATA Dangerous Goods Regulations for applicable packing instructions and operational rules.

Fast go/no‑go checklist for PI‑965, PI‑966 and PI‑970

Not sure whether a consignment qualifies for PI‑965, PI‑966, or PI‑970? Use this short checklist to make a confident go or no‑go decision before you pack.

Start with configuration and energy limits

First, confirm how the cells or batteries are offered: standalone, packed with equipment, or contained in equipment. That classification determines which PI applies and what limits follow.

Check energy thresholds next. Cells must be 20 Wh or less and batteries 100 Wh or less to meet many small‑quantity exceptions. For lithium‑metal, verify grams of lithium against the applicable limit.

State of charge and routing rules

If your route includes any air leg, you must meet air rules first. Research from IATA shows a 30 percent state‑of‑charge limit applies to many excepted air shipments and now covers certain packed‑with shipments as well.

Documented proof of SoC is expected at the point of tender. If you cannot prove 30 percent or less, the shipment cannot use the limited/excepted air provisions.

UN 38.3, paperwork, and multimodal handoffs

All cells and batteries must pass UN 38.3 testing and carriers routinely ask for test summaries. When a shipment transfers modes, prepare to meet the most restrictive mode’s requirements.

• Confirm the configuration: standalone, packed with, or contained in equipment.
• Verify cell Wh and battery Wh or grams of lithium so you meet the ≤20 Wh cell / ≤100 Wh battery thresholds.
• Produce SoC proof for air legs, such as manufacturer specs for stock items or a calibrated tester log showing 30 percent or less.
• Provide a UN 38.3 test summary for the cell or battery to show required tests were passed.
• Check package quantity and consignment limits so you do not exceed the per‑package or per‑consignment thresholds for Section II or excepted shipments.
• Confirm packaging protects against short circuits and uses a strong rigid outer package where required.
• Make sure required markings are present. If you need a pre‑shipment QC checklist, see our operational checklist for audit‑ready documentation. Audit‑proof lithium battery shipping checklist

If any item fails your check, treat the package as fully regulated and prepare a Shipper’s Declaration or consult your DG specialist. Keeping these items ready at packaging reduces carrier rejections and audit exposure.

Packaging basics, required marks, and the records carriers expect

Even when you use small‑quantity or excepted provisions, some packaging, marking, and record requirements never go away. Skipping these basics is the fastest route to carrier rejection or regulatory fines.

Start with inner packaging that prevents short circuits and movement. Use non‑conductive, individual barriers such as blister packs, sealed anti‑static bags, or molded inserts so terminals cannot touch.

Outer packaging strength, closure, and testing you should verify

If your shipment falls under a fully regulated Section I, you must use UN‑specification packaging tested for drop and stack performance. For Section IB or II exceptions, use a strong, rigid outer box that resists normal handling damage and vibration.

Packages should pass a 1.2 meter drop orientation test without shifting contents, and closures must secure against accidental opening. We advise documenting a pre‑shipment closure check to reduce carrier pull‑outs at tender.

• Use non‑conductive inner packaging so batteries cannot touch each other or metal parts.
• Choose strong rigid outer boxes such as tested fiberboard, solid plastic, or metal containers when UN packaging is not required.
• Include molded inserts or dividers to prevent movement during transit.
• Seal closures with tamper‑evident tape and record the closure method on your packaging checklist.
• Keep UN‑specification packaging details and supplier test data on file for Section I shipments.

Marking, documentation, and records to keep with every shipment

Every excepted lithium package still needs the standardized Lithium Battery Mark with the correct UN number. The mark must be durable, visible, and meet minimum layout rules such as 100 by 100 millimeters or a reduced 100 by 70 millimeters.

Retain the UN 38.3 test summary, SoC verification logs, and packaging checklists for each consignment. Carriers routinely request UN 38.3 summaries as proof that cells or batteries passed required tests.

When an air packing instruction requires it, note lithium batteries on the air waybill with the handling statement specified by IATA. If you need a pre‑shipment QC routine, our operational controls guide shows audit‑ready checks that reduce rejections.

For tests and technical requirements, consult the UN Manual of Tests and Criteria, Part III, subsection 38.3. For air packing and marking rules, consult the IATA Dangerous Goods Regulations.

Want a practical checklist to train your team? See our pre‑shipment controls and audit‑ready routines for lithium battery shipping.

Operational controls to stop last‑minute carrier rejections and audit findings

Worried a shipment will be pulled at tender or trigger an audit? Put practical controls in place so your team can show inspectors and carriers the same, verifiable story.

Major carriers often add rules that tighten regulatory exceptions. IATA operator variations explain why you must verify carrier acceptance in writing before you tender.

Pre‑tender verification and audit‑ready shipment records

Get the carrier’s current written acceptance criteria before you pack. Do not rely on verbal assurances.

Keep a dated carrier confirmation record for each booking. Include the name, title, and email of the person who approved acceptance.

• Keep a UN 38.3 test summary on file for every cell and battery model used in shipments.
• Maintain a signed state‑of‑charge (SoC) verification log showing test method, result, date, and technician initials.
• Use a pre‑shipment packaging checklist that records inner packaging, short‑circuit protection, and outer box closure method.
• Record a closure verification each time you seal a box, including tamper tape lot and photo if possible.
• Attach a digital pointer, like a QR code, to allow inspectors instant access to UN 38.3 summaries and SOPs.
• Retain shipping records in an organized folder for at least one year so you can produce them during audits.

Training, modal handoffs, and incident response controls

Map every job that touches lithium shipments to a role‑specific training plan. Make the procedures and assessments traceable.

Training must be recurrent. For air functions, refresher training commonly occurs every 24 months. For ground functions, follow DOT recurrence guidance. PHMSA training guidance

If a battery incident occurs you must act for safety first. Call emergency services and report qualifying events to the National Response Center at 800‑424‑8802 as required by DOT. 49 CFR incident reporting rules

Do not try to move a smoking or burning battery. Isolate only if it is safe. After emergency actions, file the required written incident report within the regulatory timeframe.

These controls reduce carrier rejections, keep your team audit‑ready, and make violations easier to contest. For carrier acceptance triggers and pre‑tender checks, see our operational guide. Carrier acceptance triggers and prevention tips

Next steps to make small‑quantity lithium shipments audit‑ready

Want a simple way to stop rejections and fines? Start by classifying items by configuration and by Wh or lithium‑gram limits. Always keep UN 38.3 test summaries and a documented state‑of‑charge verification for air legs. Meet mandatory packaging and marking rules, and verify carrier acceptance before you tender. Finally, maintain audit‑ready records and recurrent, function‑specific training.

• Run an eligibility check to confirm configuration and Wh or lithium‑gram limits.
• Prepare packaging and apply required markings so boxes pass pre‑tender inspections.
• Get written carrier pre‑acceptance for each routing, especially for air operator variations.
• Keep audit‑ready records and schedule recurrent, role‑specific training cycles.

If you want help implementing these steps, TMGI provides multi‑modal lithium battery shipping training and consulting. Call our Strongsville office at (866) 572-8644 . Or email twagner@tmgihazmat.com for a quick consult.