This battery pack consists of a plastic housing with cover, can be used by means of which 4 AA batteries (or rechargeable batteries?). On one of the narrow ends projecting a 30 centimeter long cable out at the end of a connector suitable for Samsung GalaxyTab exists. At the point where the cable is routed to the outside, can be found beyond an ON / OFF switch. Are batteries inserted and the switch is pushed to the ON position, so no lights small green "POWER" LED on.
If the battery pack connected to the Samsung GalaxyTab and turned on (which I had no problems), then the Samsung GalaxyTab mentioned loading. As long as the power of four AA batteries ranges is determined by me still experimental! ;-)