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Usually, yes. A lithium battery installed inside a laptop or phone is the easiest kind to ship: carriers accept devices with batteries in them under routine rules. Loose or spare batteries face much tighter limits, and damaged or swollen batteries should not ship at all. LetterAgent only sells Canada-only Xpresspost labels up to 5 kg, so packing and declaring the battery correctly is on you.
| Situation | How carriers treat it | What you must do |
|---|---|---|
| Battery installed in a device (laptop, phone, tablet) | Routine: accepted under standard dangerous-goods provisions | Turn the device off, protect it from accidental activation, pack to prevent damage |
| Spare battery packed WITH the device (one or two spares) | Allowed with limits on quantity | Each spare in its own protective pouch or with terminals taped; no metal contact |
| Loose or spare batteries shipped alone | Strictly limited; often restricted to ground transport only | Individual protection per battery; check the carrier's current rules before buying a label |
| Damaged, swollen, or recalled battery | Do not ship: prohibited by every major carrier | Take it to a battery recycling drop-off instead |
A damaged lithium battery can go into thermal runaway: a chain reaction where heat damages neighbouring cells, which release more heat, until the battery vents flame or explodes. It does not need an external spark. A puncture, a crush, or a short across the terminals is enough, and the fire feeds itself on the battery's own chemistry, so it is hard to put out in a cargo hold.
That is why the rules care about physical protection more than paperwork. A phone in its original retail box is nearly ideal: moulded packaging that immobilizes the device. A loose power bank rattling around in a padded mailer with keys is the nightmare case. The restrictions exist because one bad battery in a plane's cargo compartment endangers everyone on the flight, which is also why air shipments face stricter rules than ground.
This is general information, not legal advice.
The device itself is the protection. A battery sealed inside a phone or laptop is cushioned by the device's housing, its terminals are connected to circuitry rather than exposed, and the device has a power switch. Regulators treat that as the low-risk case, which is why shipping a laptop is routine while shipping the same battery loose is not.
Two traps catch people here. First, a power bank counts as a spare battery, not a device, even though it looks like a gadget. It ships under the loose-battery rules. Second, "installed" means installed: a laptop battery removed from the laptop and tossed in the same box is a spare again, terminals exposed, and needs individual protection. If the battery comes out, tape over the terminals or bag it separately.
Power it fully off, not just asleep: a device that wakes in transit can overheat inside insulation. If it has a removable battery, decide whether to leave it in; installed is simpler. Wrap the device in bubble wrap, place it in a snug box with cushioning on all sides, and make sure nothing else in the box can press the power button or puncture the screen. The shake test applies: nothing should move.
For cross-border shipments, the customs form needs an accurate description, and some carriers want a lithium battery handling mark on the outside of the box. When in doubt, declare it. An undeclared battery discovered in screening gets the whole parcel pulled, delayed, or returned, and carriers can fine the shipper. Honesty at the counter is cheaper than a seized parcel.
Air transport is where the tightest rules live, because a battery fire at 35,000 feet is a different problem than one in a truck. Standalone lithium batteries are heavily restricted on passenger aircraft, and some carriers route them ground-only. A phone or laptop in a device, properly packed, flies without drama on the express services, which is part of why Xpresspost works fine for a laptop going across the country.
The practical takeaway: if you are shipping a device, any standard parcel service will do. If you are shipping loose batteries, check the carrier's dangerous-goods page before you buy the label, because the answer depends on the battery type, the quantity, and whether the parcel flies. Rules change, and the carrier's current page beats any guide, including this one.
Ready to ship it? Get a shipping label with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and get your label.
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