So first of all, I think the whole thing is basically off-topic. Sure, you can create "on board wifi" with it. But I don't think this is a great thread to start advertising the Pixel 8 Pro either.

Second, I'm not sure who's joking/trolling/misunderstanding, but multiplying sink voltage by source capacity is irrelevant. The battery would need to be rated for that number. Voltage output times capacity does not answer this question.