With the snap-on universal power adapter, the Pro-B3, Pro-B2 or the Pro-7b is quickly recharged, an empty battery is loaded in just 2.5 hours. At the same time, this gives the opportunity to use the unit while charging, allowing the photographer to get more flashes from the generator without changing the battery. Using the battery generator without modelling light, you can get almost the same capacity as a normal studio generator. The adapter accepts a wide range of input voltages: 12–24 V or 90–240 V.