Here the nexy system ensures energy-efficient battery management: During breaks and shutdowns of up to three weeks, the entire AGV system or individual vehicles can be switched to a "sleep mode" by radio, in which they do not consume any energy. 

The vehicles then do not have to go to a central charging station for their “time out”, but instead remain in any (parking) position. A buffer battery supplies the radio receiver, which receives the "wake-up" signal and forwards it to the AGV control, with power during this time.