Buy iPhone 5 replacement battery online?

My battery is acting up from time to time. I think it needs to be replaced. It is in warranty, but I don't live near an Apple store. Is there a place online where I can buy a genuine battery and not a Chinese knockoff? I know how to replace the battery and I'm aware that opening the case will void my warranty.

Its super hard to replace a iphone battery. You should mail it in.

BS. It was super hard with the iPhone 3 and 4 series, but it is super EASY with the 5th gen models.