Grazie SUB53 per la risposta,
non è un errore: l'alimentatore è questo:
https://www.amazon.it/gp/product/B09...?ie=UTF8&psc=1
per alimentare 2 di questi
https://www.conrad.it/p/hitec-multic...-piomb-1539163
Power Source 12 Volt Car Battery or
11-30 Volts DC 60 AMP Power Supply
When connecting to a battery or power supply it is
critically important that you use either a fully charged
12 volt car battery or a high quality DC power supply
that has a voltage range between 11 to 30 volts DC
and a minimum current rating of 60 amps.