Circuit for an emergency lighting device, comprising: - output terminals for driving emergency lighting means, - a storage unit for electric energy, such as a battery, - input terminals (2; 2a, 2b) for being supplied with an AC voltage, - an isolated converter, preferably a flyback converter, connected to the input terminals (2; 2a, 2b) and arranged to feed a constant current through the emergency lighting means via an lamp driver circuit, preferably a buck converter, in a non-emergency state in which the AC voltage is present at the circuit, - an emergency driving circuitry arranged to drive the emergency lighting means in an emergency state in which the AC voltage fails, wherein in the emergency state the emergency driving circuitry drives the emergency lighting means from the energy storage unit and wherein the emergency lighting means is connected to the output terminals, characterized in that: - the circuit is arranged such that, in the non-emergency state, in which the AC voltage is present, the charging of the energy storage unit is performed by a clocked charge converter, preferably a buck converter, - the input of the clocked charge converter is connected to the output of the isolated converter (21, - the output of the clocked charge converter is connected to a battery charge indicator circuit and-an input of the storage unit, said battery charge indicator circuit comprising a battery charge indication LED, which indicates activity of the clocked charge converter, - the battery charge indicator circuit comprises a DC reservoir circuit which comprises a resistor-capacitor circuit, and - the DC reservoir circuit is arranged to activate the battery charge indication LED only in case that the clocked charge converter is operated above a certain duty cycle, preferably with a duty cycle higher than twenty percent, thereby charging the DC reservoir circuit above a threshold voltage value. - output terminals for driving emergency lighting means, - a storage unit for electric energy, such as a battery, - input terminals (2; 2a, 2b) for being supplied with an AC voltage, - an isolated converter, preferably a flyback converter, connected to the input terminals (2; 2a, 2b) and arranged to feed a constant current through the emergency lighting means via an lamp driver circuit, preferably a buck converter, in a non-emergency state in which the AC voltage is present at the circuit, - an emergency driving circuitry arranged to drive the emergency lighting means in an emergency state in which the AC voltage fails, wherein in the emergency state the emergency driving circuitry drives the emergency lighting means from the energy storage unit and wherein the emergency lighting means is connected to the output terminals, - the circuit is arranged such that, in the non-emergency state, in which the AC voltage is present, the charging of the energy storage unit is performed by a clocked charge converter, preferably a buck converter, - the input of the clocked charge converter is connected to the output of the isolated converter (21, - the output of the clocked charge converter is connected to a battery charge indicator circuit and-an input of the storage unit, - the battery charge indicator circuit comprises a DC reservoir circuit which comprises a resistor-capacitor circuit, and - the DC reservoir circuit is arranged to activate the battery charge indication LED only in case that the clocked charge converter is operated above a certain duty cycle, preferably with a duty cycle higher than twenty percent, thereby charging the DC reservoir circuit above a threshold voltage value.