Yes, the Canon LP-E6P works on the 5D MK3

I spent many hours looking this up but couldn't find anything online about it. Yes, there is no reason it shouldn't work, but I wanted to confirm before spending $79. A bunch of people sent me completely useless AI responses (this is significantly more annoying then just keeping your mouth shut).

TL;DR I ended up just ordering it and can confirm it works.

Hopefully the god awful SEO gods will show this if someone needs.
Don't be that person who copies and pastes LLM responses to extremely niche questions.

This is day 40 of #100DaysToOffload