Transport Canada recently released a bulletin in July 2010 regarding the transportation of batteries under the TDG. This bulletin includes general information, classification, requirements for shipping, cross-border shipments from the United States, upcoming changes and more.
It's important to note that not all batteries are subject to regulations of the TDG. For example, common household-type alkaline, nickel, cadmium (NiCad), nickel metal hydride (NiMH), and silver-zinc batteries are not classified as dangerous goods. Some small lithium batteries, depending on the amount of lithium they contain, may also be exempt from the TDG regulations.
The regulations do require dangerous goods to have a shipping document that includes information outlined in section 3.5 of the TDG.
For the complete bulletin, please visit Transport Canada's website.