For what it's worth, Canadian Tire offer a 9 year full replacement extended warranty for $10 on their MotoMaster Eliminator battery. I know someone who received a quite bit of a hassle when he tried to have his battery replaced under warranty at Canadian Tire, but given the 9 years' worth of warranty, I find this to be a smoking deal for consumers, and I have no idea how Canadian Tire can make the numbers work out in their favour.
-Lik