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A loose lithium battery on its own is a dangerous-goods shipment that needs special handling, so a standard LetterAgent Xpresspost label does not cover it. Batteries installed in a device are treated differently from loose ones. Here is how carriers draw the line, how to pack batteries in devices, and what to do with a loose battery instead.
A lithium battery stores a large amount of energy in a small package, and if its terminals short-circuit or the cell is punctured, it can catch fire in a way that is hard to put out. A battery sitting inside a phone or a laptop is protected by the device's own casing and by a battery management circuit, which is why carriers accept those shipments under normal parcel rules. A loose battery has no such protection: in a bag or a box with other metal objects, its terminals can touch something conductive, and a damaged cell has nothing around it to contain the heat.
That difference drives the whole rulebook. Carriers sort battery shipments into three groups: batteries installed in equipment, batteries packed with equipment but not installed, and loose batteries on their own. The first group is the easiest to ship, the second needs extra packing and marking, and the third is a regulated dangerous-goods shipment that most ordinary parcel services will not take at all from a walk-up customer.
| Battery situation | How carriers treat it | What you need |
|---|---|---|
| Installed in a device (phone, laptop, camera) | Accepted under normal parcel rules in most cases | Device switched off, protected against accidental activation and damage |
| Packed with a device, not installed (a spare battery in the same box) | Accepted with conditions by many carriers | Terminals protected, battery packed so it cannot shift or short |
| Loose, on its own, no device | Regulated dangerous goods | A dangerous-goods shipper account, approved packaging, and proper marking: not a standard parcel label |
Damaged batteries are in a category of their own, and the answer is stricter: a swollen, punctured, or visibly damaged lithium battery should not be shipped through the regular mail at all. These are the batteries most likely to fail in transit, and carriers that do accept them require special packaging and documentation that a standard label cannot provide. A recalled battery follows the manufacturer's return instructions, which usually name a specific carrier and packaging.
If you have a damaged battery, the safer route is a local drop-off: many electronics retailers and municipal hazardous-waste depots accept them, and they handle the onward transport under their own dangerous-goods arrangements. Do not put a damaged battery in a parcel and hope it passes unnoticed; if it fails in a sorting plant, the consequences go well beyond a lost parcel.
Switch the device off, not just to sleep, so it cannot wake up and heat up in transit. Protect the screen and corners with cushioning, and pack the device so it cannot move inside the box. If the device has a removable battery, leaving it installed is usually the simpler option, since a battery packed beside the device faces stricter rules than one installed in it. Tape over exposed terminals on any spare battery that shares the box, and keep spare batteries away from metal objects.
Air transport adds another layer: parcels that fly face tighter battery rules than parcels that travel by road, and some battery shipments are restricted to ground transport only. Within Canada, a parcel to a remote community may travel by air for part of its journey, which is one more reason to check the carrier's battery rules for that destination before sending a device.
First, check whether the battery really needs to travel on its own. If it belongs to a device, shipping the device with the battery installed is often the simplest legal route. If you are a business that ships batteries regularly, setting up a dangerous-goods account with a carrier is the proper path: it involves approved packaging, staff training, and a declaration for each shipment, but it is how battery sellers and repair shops move stock lawfully.
For a one-off loose battery, local options usually beat shipping: a retailer take-back program, a hazardous-waste depot, or returning it to the manufacturer. LetterAgent's Xpresspost labels cover ordinary domestic parcels up to 5 kg, which includes a phone or laptop with its battery installed, but they do not turn a loose battery into an ordinary parcel. When in doubt, ask the carrier directly before you pack anything: a refused parcel costs far less than a dangerous-goods violation.
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