I've wanted to power and charge my Thinkpad T480 laptop in my Tesla Model 3 using the enormous power of the Tesla batteries. I tried using a USB to USB-C cable from all the different USB connectors in the Tesla - NO LUCK; I tried charging a external battery pack and powering my laptop from it - NO LUCK; I tried a power inverter from the cigarette lighter to an AC plug and then plugged in my Thinkpad power adapter - NO LUCK; I finally found a solution, a DC to DC power adapter that converts the cigarette lighter 12 V power to the proper 20V USB-C power! #tesla, #teslamodel3 u/elonmusk Here is my video on how I did it:
Here are the products I tried: USB-C CAR Charger for newer Lenovo ThinkPad laptops and other UCB-C powered devices - https://amzn.to/2TV9tw5 CAR Charger 90W 65W for older Lenovo ThinkPad X1 - https://amzn.to/2Gml4fF Car Power Inverter 12V DC to 110V AC Converter - https://amzn.to/2RPFXFy