Kessler Mag Max 3A adapter uses ordinary power tool batteries to charge cameras

Kessler, a company that specializes in accessories for filmmakers, has launched a new product called the Mag Max 3A, an adapter that works with select DeWalt power tool batteries for charging cameras, smartphones and certain other equipment. The adapter can be used with the DeWalt 20v Max and 60/20V Flex Volt models. The adapter is quite unusual, but it's easy to see how some users may benefit from this arrangement. Power tool batteries are available at most hardware stores, are fairly affordabl...