I have that one that I've used with a 15" SB2 while gaming with the GPU going full blast and it was able to keep up just fine, although I've only used it a handful of times. Make sure you use a USB-C cable rated for that amount of power, IIRC most are not.
edit: if you're talking about the car battery draining fast... yeah, leave the car running
Link got garbled. Fixed: https://www.amazon.com/gp/product/B07KDZ2T44/
In future, chop off Amazon links like I did above.
+1 much more efficient and compact to go straight to USB-PD if your laptop supports it (nearly all modern ones do).
This is the one I got, works perfectly.
https://www.amazon.com/gp/product/B07KDZ2T44/ref=ppx\_yo\_dt\_b\_search\_asin\_title?ie=UTF8&th=1