It filled its purpose charger, the battery is actually charged at 80% in 15 minutes, an indicator light provides information on the battery charge. I have not tested with batteries of different brands. The use of this device can be made with currents of different intensities and can therefore easily be used abroad without problems. We can blame the noise made by the charger but the charging time is relatively short this is not a real problem especially as it is still bearable.
