While the ERNE comes prepared to accept AC input (in addition to using a battery) it still requires a specific type of transformer that converts the AC signal (100vAC-240vAC/50-60Hz) to the appropriate voltage, this transformer should work anywhere in the world that provides standardized power.

As of October 8, 2023 this is a new transformer that supplies a much higher voltage then the previous version, this eliminates having to adjust shots/drills based on ERNEs power source (AC vs Battery).