Laptop battery recently died, and I'm planning a new PC build anyway, so I'm wondering: can I just remove the HDD from my laptop and connect it to the motherboard? Would I need any extra parts or hardware? I'm guessing no, but it's hard to research on my phone. Any guidance is appreciated :) thanks!
You don't even need to do that. Unless you're pressing and rubbing the board against the chassis, any minor air gap and natural oxidation layer on each side is going to be more than enough for what's probably only 5 V tops.