This product does not work reliably with the Lumia 930. The charger is very small and very hot. In addition, the actual charger seems to take a higher power, can supply as the power supply (if one goes by the technical data). The power supply is also very hot. The charging process is as a result of overheating constantly interrupted, reliable charging is not possible. Allen looking for a sophisticated battery charger of this type, I can recommend the DT-900, which easily for weeks is serving with me.