Question about Goal Zero Sherpa

No, it doesn't work! The power supply unit draws approx. 350W...

Hello, in my experience, any 230V appliance can be connected with a 2-pin plug as long as it does not "draw" too much. As an example: a coffee machine or iron "draws" too much power, but a battery charger is no problem. I can even charge large Anton Bauer ProfiCam batteries with it. However, only 1 battery 1 time > but also draws a lot, i.e. Voltage: 14.2 V and Capacity: 92 Wh. Your batteries should not be a problem...
To be on the safe side, wait for the answer from the Digitec technicians, because they are experts, which I am not...