The deal is that lithium batteries are considered dangerous goods, and shippers have to comply with extra regulations for them to be shipped into Canada. So I guess it depends on where you're buying them from & how they're shipped - I would think that a well-established vendor should know what they're doing regarding international shipping. But again, I guess it depends on the vendor because when I ordered my ProVari they specifically stated that they do not ship batteries internationally, so I assume it's because they just want to avoid the hassle. So I just got batteries from within Canada to save myself any hassle.