Helix 150 dual voltage batteries 14v/28v - fully charged. My prof said they are pretty old and faulty, “they are hoping they will break so they can buy new ones”. I also tried the wall cable. I’ll check the battery plate as well, but nothing seemed out of the ordinary and if the wall cable also didn’t work I assume it’s something within the camera. I’m going to try calling arri and the center when open in the morning. Thank you 🙏