Battery Powered Laptop Charger

thingiverse

This is a project I made to charge my laptop using batteries 36v+. It includes the necessary schematics and files to recreate the entire project. It can output a constant 5A at all output voltages, so 20V would provide 100W of charging power. The project is quite specific to my setup, however it does work well as long as the setup is the same. A USB to Lenovo rectangle connector wire is required and modifications to it may be required to allow the laptop to draw higher current than normally allowed. Included is the schematic for an 85% efficient buck converter to convert the high 36v battery to a regulated 20v to charge a laptop. The output USB does not currently support any protocols to switch the voltage, so the output USB port remains at a constant 20v. The schematic part list can be found in the schematic, but other parts are required (but can be had for cheap). XT60 connector USB connector 12v non pwm fan If you do want to recreate it, I will try my best to help you along the way!