The Profoto universal power adapter helps you quickly recharge the Pro-B3, Pro-B2 or the Pro-7b battery generator.The Profoto universal power adapter lets you load an empty battery in just 2.5 hoursThe Pro-7b Power Adapter lets you use the unit while charging and enables the photographer to get more flashes from the generator without changing the batteryThe Profoto Pro 7b Power Charger accepts input voltages in different ranges such as 12-24V or 90-240V