Not only that but is would add an extra failure point. Hand tools are made for rough use, and I certainly wouldn't want a flimsy adapter between my tool and bat

Not only that but is would add an extra failure point. Hand tools are made for rough use, and I certainly wouldn't want a flimsy adapter between my tool and battery. And I am just a home gamer. I can't imagine a pro whose living depends on reliable tools rely on hacks like these. These guys buy absurdly expensive Hilti tools because this is a brand they can count on, they can spend a couple hundred bucks on a pair of proper batteries.