External Lapotop Battery Charger for Dell Stud 16, XPS PP35L, XPS 640 / U011C, X411C Rating 10.8v or 11.1v Laptop Battery This charger is for rating 10.8v or 11.1v battery, NOT for 14.4v or 14.8v battery. Input Voltage: 100 ~ 240V AC AC 0.24~0.60A 50/60Hz Output Voltage: +12.6VDC / 2.5A Condition: Barna new 6 months limited warranty