... : 50Hz-60Hz GCA 6-12V/5A, GCA 6-12V/10A, GCA 6-12V/20A, GCA 6-12V/30A, GCA 6-24V/5A ... -24V/30A, GCA 6-36V/5A, GCA 6-36V/10A, GCA 6-36V/20A, GCA 6-36V/30A, and GCA 6-36V ... in the coal mine, the chargers may be used as power supplies for safety lighting Parameters:Input voltage: 220V±10%Charging ... °CRelative humidity: 80%Switching of charging voltage: GCA exchangeable GCA battery Charger 12V/10A