Your leaf blower battery should be able to charge a laptop. Your drill battery should charge your phone. And while we’re at it, why shouldn’t our ever-more powerful USB-C power adapters be able to charge those power tool batteries as well?
Fundamentally, there’s not much difference between a battery bank you buy from Anker and a power tool battery from DeWalt — both generally contain the same 18650 lithium-ion cells. But to do all that, your power tool batteries would need a…
