Do you sell wireless earbuds, power banks, cordless tools, or electronic devices? Then you’re already shipping lithium batteries — often without realizing it. In 2026, these shipments are subject to strict regulations in Canada, and the rules have changed. Incorrectly labeling a package can result in the carrier refusing to accept it, a fine, or even a security incident.

For small and medium-sized businesses or individuals shipping within Canada or internationally, understanding these requirements is not optional: it’s what makes the difference between a shipment that’s accepted and one that gets held up at the sorting center. Here’s what you need to know to ship lithium batteries no unpleasant surprises.

Why lithium batteries are classified as hazardous materials

Lithium batteries are classified as Class 9 dangerous goods under the Canadian Transportation of Dangerous Goods (TDG) Regulations. In the event of a short circuit, impact, or overheating, they can catch fire—a particularly critical risk in air transport. That is why every carrier enforces specific rules for packaging, labeling, and documentation.

There are two main categories: the lithium metal (non-rechargeable batteries, often found in watches or medical devices) and the lithium-ion (rechargeable, used in phones, computers, and power banks). Each has its own thresholds and UN numbers.

Important UN numbers to know: UN3480 and UN3481

The correct UN number depends on how the battery is being transported:

• UN3480 : Lithium-ion batteries shipped on their own (for example, a batch of new portable chargers).
• UN3481 : lithium-ion batteries contained in equipment or packed with equipment (the most common scenario in e-commerce: a device with its battery).
• UN3090 and UN3091 : equivalents for lithium metal batteries.

The UN number and the official shipping name must be displayed on the outer packaging as soon as the shipment exceeds the minimum requirements.

The watt-hour limit: Section I or Section II?

The most important rule to remember is the threshold in watt-hours (Wh). To qualify for the simplified requirements of «Section II» (those used by most consumer products), two limits must be met:

• each cell does not exceed 20 Wh;
• each full set of drums does not exceed 100 Wh.

Above these thresholds, the shipment falls under «Section I»: full declaration of dangerous goods, UN-approved packaging, and trained personnel. In practical terms, a phone (about 10–15 Wh) or a laptop (often 50–70 Wh) remains in Section II, whereas a large power tool battery or e-bike battery can easily exceed 100 Wh and require the full procedure. Always check the battery label: the Wh value is usually listed there (if not, multiply the ampere-hours by the volts).

What's New in 2026: Charge Status and New Brand

Two important changes are taking effect this year and deserve your full attention:

1. Load capacity limited to 30 %. Since the 1st^er January 2026, lithium-ion batteries packed with equipment must travel by air with a load not exceeding 30% of their capacity. Previously, this rule applied only to batteries shipped on their own. For online sellers, this means that a device should not be shipped with a fully charged battery.

2. The «lithium battery» brand is evolving. The regulatory symbol (the red hatched rectangle, 100 mm × 100 mm) no longer requires a phone number. Both versions of the brand—with or without a number—will remain valid until December 31, 2026. Effective January 1^er As of January 2027, only the new version will be compliant. If you plan to purchase labels in advance, choose the version without a number now.

Carrier-specific rules

Each carrier publishes its own shipping guide for batteries, and acceptance criteria vary:

• Canada Post does not allow not Shipping lithium batteries to destinations outside Canada and the United States. Domestic shipments are still permitted under certain conditions.
• UPS, FedEx, and Purolator accept batteries that comply with Section II, but impose restrictions on loose batteries, often require an approved dangerous goods account, and may charge specific handling fees.
• Transportation aerial is always more restrictive than transportation terrestrial : If your shipment can be transported by road, the restrictions are generally less stringent.

Before each shipment, consult the current guidelines from the relevant carrier. A damaged, defective, or recalled battery is, in almost all cases, Prohibited from shipment.

Packaging and Documentation: The Checklist

To ensure your shipment is compliant and accepted on the first try:

• Use packaging sturdy and solid, capable of withstanding normal shipping conditions.
• Protect each battery from short circuits : insulated terminals, battery in its original packaging or an individual bag.
• Prevent everything movement inside the package and any accidental activation of a device.
• Affix the lithium battery brand, the UN number, and the official name, when required.
• Attach the documentation required (declaration, if applicable) and adhere to the maximum number of batteries per package.

Conclusion: Secure Your Battery Shipments

In summary: identify the correct UN number (UN3480 or UN3481), check the 100 Wh threshold, comply with the 30% state of charge limit by 2026, and adopt the new labeling requirements before the 2027 deadline. Following these simple steps will help you avoid rejected packages, delays, and risks.

The thresholds, fees, and acceptance criteria are for reference only and may vary depending on the carrier, the service, and your commercial agreement. Not sure about your product’s classification or which carrier is best suited for your needs? The team at’Shipping Store can help you pack, label, and ship your lithium batteries in full compliance with regulations. Contact us at expertshipping.ca for hassle-free shipping.