EDIT: Have Ryzen and Li-Ion battery

I use this to charge my laptop in the car, Apple 87W power supply. It takes several tries but it works. From the power specs on the Series S, this should work, but YMMV.

https://www.amazon.com/Duracell-175-Watt-Power-Inverter/dp/B00BOU11JY/ref=sr_1_3?crid=GDGU3A8Z7A4O&keywords=duracell+inverter&qid=1650907656&sprefix=duracell+inverter%2Caps%2C181&sr=8-3