reversible inverter

Standards

a device that functions as a battery charger while the normal electricity supply is available and which, on failure of the normal supply, assumes the function of an inverter supplying the emergency lighting from the emergency power source

This definition usually applies to central battery systems.

Source - AS/NZS 2293.1:2018: Emergency lighting and exit signs for buildings

HB50

device which functions as a battery charger while the normal electricity supply is available and which, on failure of the normal supply, assumes the function of an inverter supplying the emergency lighting from the emergency power source
See also: static inverter