mine is sitting stored in the garage too, my battery was in poor shape (and it looks like the ctek didn't help anymore) so i am replacing the battery,
but as precaution i tied a piece of string through the inside trunk release handle (right side front) and threaded it out between the hood and rubber seal beside the left headlight, this is a mechanical release and even if the battery is dead it will give you access to the battery compartment.
you can get a ctek battery maintainer at canadian tire, they were on sale for about $60.00 last year,
but any battery charger that can provide a floating charge and maintain setting will work, cdn tire sells several, i've even seen them at peavey mart for about $30.
