The abvolt (abV) is one option for the unit of potential difference in the EMU-CGS system of units, and is equal to 10−8 volts in the SI system.
A potential difference of 1 abV will drive a current of one abampere through a resistance of one abohm.
In most practical applications, the volt and its multiples are preferred. The national standard in the United States deprecates the use of the abvolt, suggesting the use of volts instead.
The other option in the cgs system is the statvolt.
References
Abvolt Wikipedia(Text) CC BY-SA