Just bought the Gooloo GP 4000 directly from Gooloo because I saw Amazon listed it for $189 but I guess I kissed this thread link showing it for $100. Same price total out the door as Gooloo has 45% discount now from full price.
I do use a 24F, which is a big 12V battery rated for midsize truck, SUV, and large sedan. It is connected to a solar trickle charge.
I also have a large Caterpillar jump box with built-in inverter, USB A (no C), and air pump. I only used this 3 times and that is because the Fit has a tiny lawn mower battery and I charged my phones while the engine off.
I need to convince my sister to take the Caterpillar jump box for her car now that she is driving herself. The last jump box I gave her was a low cost piece and I found it in the garage and dead due to no use. Very frustrating.