Tolin 90W Laptop Charger AC Adapter Battery Charger Power Supply For Lenovo ThinkPad X1 Carbon Touch Ultrabook 45N0237 344428U 344425U N3N25UK N3N75UK N3N2SUK N3N82UK PA-1900-72 Input: 100 ~ 240V 50~60Hz,DC Output: 20V 4.5A 90w, Connector:Rectangular tip Package included:1 laptop charger & 1 3 prong power cable Replacement part number: 45N0236, 45N0237, 45N0238, 45N0239 0B46994, 0B46995 The laptop charger was tested to sure it can work for lenovo laptops which Listed One year warranty!!