Yes okay, I confirm that the part iFixit is offering is just the standard capacity (9.34Wh / 2.4Ah):

https://www.ifixit.com/en-ca/products/iphone-13-mini-battery

It doesn't seem like Repart do direct to consumer sales; I'll look around and see if I can find somewhere reputable to buy that in Canada.

Based on this reddit thread, it doesn't seem that there's really a consensus around whether these purported supersized after market batteries are the real deal:

https://www.reddit.com/r/iPhone13Mini/comments/1gap4yc/share...