Lost the power supply of your notebook, or want an extra adapter? The Ewent EW3889 dedicated notebook adapter 65W 20V/3,25A for LENOVO ULTRABOOK replaces the power supply that came with your notebook.
Solid quality plugs
All Ewent notebook chargers come with solid high quality tips. They fit firmly into the power socket of your notebook. The Ewent EW3889 charger comes with 1 tip with dimensions 11*4,6mm, suitable for notebook of Brand such as LENOVO ULTRABOOK. This dedicated power supply adjusts its output voltage using an intelligent technique that detects which power plug is connected. To find the plug that fits your notebook, do not only check if the plug physically fits the power socket of your device, but also check if the voltage that is indicated on the tip of the adapter is correct for your notebook. Check the product gift box or label for an overview of the voltage of each power plug.
No concessions were made to safety. The adapter has a fourfold intelligent protection system, that protects against overheating, over voltage, over current and short circuits. Also, the adapter stops charging when it notices that your battery is full.
How to calculate the wattage of your notebook
To see if the universal charger is suitable for your netbook or notebook, you can calculate the wattage of your laptop. First, check your current charger or check the properties of your notebook. Then multiply the volts by the amperage to calculate the total watts needed. For example, if your current charger has an output of 15V 3A, you need an adapter with 45 watts (15V x 3A) at minimum .