cutoff voltage
Technical term in electronics: the voltage at which a device stops conducting or a battery is considered discharged.
The cutoff voltage of this battery is 2.5 volts.
More specific term for the end-of-discharge voltage of a battery, while 終止電圧 is a broader term used for various devices.
Compound of 終止 (termination) and 電圧 (voltage), directly describing the voltage at which operation stops.