Abstract: The invention relates to an electrical mobile event lamp. The object of the invention is to design a mobile electrical event lamp for hiring for events, such that same can be used alternatively for permanently wired and battery-powered operation. According to the invention, this is achieved by integrated rechargeable batteries for power supply and a connection for a wiring of the lamp provided for an alternative power supply, as well as a blocking function implemented in the electronic controller of the lamp for access to the integrated battery implemented in the electronic controller of the lamp, and a data connection for activating or deactivating the blocking function by means of an external data synchronization.