Originally Posted by cheapthrills
typically grounds or SI batteries
If it is the SI board batteries, onlybatteries.com
has the batteries you need (CR14250SET-FT) for the best prices I was able to find and they're located in Quebec. That includes Chinese/Korean sellers.
Also if you order on Saturdays there's a coupon code you can use to get a better deal. I'll dig that up and edit it in here when I get home.