High efficiency LED lamp in shape of popular MR11 spot for Off-Grid application, e.g. chalet, tent, caravan. Through its very low power consumption it can be used with a 5 W solar panel and a small battery of 4 Ah only for a light time of 16 hours. Thus the total system cost can be reduced to a minimum. The light output is comparable to a 12 W halogen spot, with the benefit of long life span of > 40.000 hours. Furthermore the lamp is now available without housing and the G4 socket, especially for the use in caravans and mobile homes.