I want to turn all my power tools and batteries a universal connector like USB-C. I have a 3d printerand skills so getting the manual interface is easy enough, but I don't a lot about ports and tech. I'm learning fast, but I'm not quite there yet.

From what I understand, I'd need to put a female port on the battery which isn't difficult and has been done plenty for charging.

I'd need to put a male plug on the tools to interface with it, and my initial research says I can't just solder the power pins to the cables in the tool, I'll need a circuit board that requests the 20v from the usb source? Is that doable? It looks like I can pick them up on AliExpress. But I need a qualified adult to verify that's what I need to do.

From there, would I be able to cord them with this method or would I need to build a better usb charger port?

Is there a better port to use? Usb-C is nice and small so I can fit it in wherever I like, but can it handle tool use? Would it be better to do usb or something else?