Please check compatibility with your laptop carefully as laptop models do vary. Ensure you have the correct Tip Size, Output Voltage and Amp Rating from your previous charger. The AC power adapter enables you to operate your laptop or charge the battery from electrical power outlets. If you are running your computer on AC power with a battery installed, the adapter charges the battery ( if needed ) and maintains its charge. Tip Size: Rectangle Tip Output: 20V 4.5A UK Three-Pin Plug Power Cord Fit for models : Lenovo IdeaPad Yogas new rectangle tip with pin in the centre Lenovo IdeaPad part number: 36200250, 36200604, 36200608, ADLX90NCT3A, 36200298, 45N0309, 45N0310 ADLX90NCT3A, 36200298, 45N0309, 45N0310, 36200250, 36200252, 36200254, 36200285, 36200286, 36200287, 36200285, 36200286, 36200287, 36200298, 36200604, 36200612, 36200680, 45N0309, 45N0310, ADLX90NDC3A, ADLX90NCC3A, ADLXNLC3A, ADLX90NDC3A, ADLX90NCC3A, A090A052L, PA-1900-71IF, ADP-90XB and many more Please check compatibility with your laptop carefully as laptop models do vary.