This is the EV-Peak 400Watt Four Port Quad Charger, 220V-240V Version. The charger has a selectable voltage switch so it can be used worldwide. But the switch will come preset to the 220V-240V setting. It is a quad AC/DC charger, it could charge four packs of batteries at the same time and display data of each portsingly. With two independent output and temp port, two cooling fans could help charger cool down efficiently. With AC/ DC input , two independent output and temp port . In temp port you could connect charger and PC with USB software kits to monitor and analysis battery performance completely.