This forum is odd. I tried to delete the topic as it was just a mistake on my part, but it left the topic itself with just your reply.

Turns out the red power cell port was referring to its compatibility with whatever is selected on the right, and not referring to its current state, as I thought it was. It seems counter-intuitive, but it works alright.

Thanks for your reply.

Not really, we just ignore threads that have been solved. Best case scenario, just don't delete your post.