I bought this device for a holiday with little opportunity to recharge mobilder devices. In the sun to charge, for loading if needed use -super thing. Initially, the charging time was in the sun (in the room on the windowsill) in order (I seem to remember: about 2.5 hours for 2 of 4 light points). Meanwhile, I have the impression that the solar-thingy is broken, because regardless of the weather and time in the sun, it does not indicate a single point. At the socket but it can be reliably charge - but also anything but fast. Almost 2 days has been around the power plug to fully charged to sein.Und also here waiting for the first light spot for a while - so do not be irritated - it is not suspect! The basic idea, however, is met. If even loaded, can be virtually loaded thereon in your pocket mobile phones and MP3 players while operation. Wür much store sufficient, the total charge of the equipment I do not know.