They would probably charge in like 2 minutes lol.
I sincerely hope you're not being serious. You are aware that lithium-* batteries require
strict current and voltage levels
You can't just throw more voltage/current at them to make the recharge faster - the protection circuit board won't allow that.
Circumventing the protection unit is a surefire way for a magnificent fireshow.
Sure you can, I charge lipo at more than a few C all the time. Protection board, lol. Like any large format lithium battery has an integrated BMS.
Sounds like your thinking about laptop batteries.