They are the first to market, but they certainly won't be the last: Power tool manufacturer Bosch has rolled out wireless charging for 18-volt cordless tools before any of their competitors. An inductive charger transmits electricity to the battery placed atop it, meaning for the first time one doesn't have to disconnect the battery to juice it up.
The productivity gains spread across the entire body of users should be enormous. I can't tell you how many times I've been using my drill and impact driver in concert, and invariably one or the other will run out of juice, meaning I've got to go back and forth with one battery on both units while I charge the other battery up. Arguably this wouldn't happen if I had the discipline to disconnect both batteries after every job and pop them back on the charger, but I just don't. With a charger frame like Bosch's, I could simply dock the entire tool after each gig and come back to 100% battery life, checking the little LED indicator on the base to be sure.
Check it out:
The company reports that the new 18V batteries are backwards-compatible, so legacy Bosch users won't be left in the wired-up cold.