Quark 2-slot Charger SpecificationFor Quarkcell AA & AAA batteries only Model CG1670P1 Input voltage 100 ~ 230 Vac Charging slots 2 Charging voltage 1.65V~1.68 V Charging current 7A max. Lights indication Power on GREEN Charging RED Fully charged GREEN Quark-AAAA-ChargerQuark-AAAAAA-Charger