SMAKN&reg; Power Supply AC 100-240V to DC 48V 3A 144W Adapter Car Cigarette Lighter Socket DC Charger Product Name: Switching DC Power Supply Adapter. Input voltage: AC (AC) 100-240V. Output voltage: DC (direct current) 48V 3A. Output Current: 3000mA. Voltage frequency: 50 / 60Hz.