Goal Zero Yeti Generators?

Yeti is very expensive per watt compared to other individual components.

Perhaps this plain English series on solar may be of help:

https://freecampsites.net/adding-solar/

If your goal is small storage, and inverter, it's a nice neat package. For a TT though consider, for less than $225 you can get a pair of GC-2 batteries, and another $100 will get you a larger PSW inverter for running AC powered items.
The 400 model listed on their site has a 33 Amphr battery (Lion)
and a 300 PSW inverter. (enough to run a tv, or to power small appliances or lights. for $449.
Spending less on bigger batteries on the TT, GC-2 could give (200 amphr), with a 500 inverter, would in a pinch even allow you to run an extension cord into your home from the trailer (if you can park close) and power something like your refrigerator in a pinch. You would even have money left over to get a solar panel and small controller.

If compact and a clean little unit is your goal, go for it, if you want maximum bang for your buck, use the sysyems as are common on a TT.
JMHO

Goal zero is a super high quality company with great people. I have personally worked with them before, and can't say enough good things.

I suspect you will hear the word "overpriced" bounce around in this thread. And it's very true, that if you are both handy and motivated, you can come up with something that stores more for less.

The GZ stuff is just plug and play, easy easy to work with, looks good, and is backed by a cool company.

:-)

“Normal” solar is less expensive. 33 AHs for $450? And a NOMAD solar panel for $200...twenty watts!