Pretty simple machines ... I've got an Original OMEGA / ALPHA 90 that will be 5 yrs old this December.
Water with some antifreeze / coolant added. Grease in the lube cup/thimble. Filters if you have them and turn it on ... ENJOY
Purge air & water via bleeder OFTEN !! ( Like every 5 min of less ! )
Trail charger know nothing about ..... as with most things NEW, there needs to be time to be things OLD with a track record.
Looked it up .... Chinese https://airgunarcheryfun.ca/jts-gx-e-cs3-compressor/
Speaking with someone who is familiar .... different machine architecture being more TUXING in it being a piston with a piston stacked being a 2 stage, where the Typical omega is a piston within a piston within a piston being a 3 stage.
Southern Gunner has 3 videos on You Tube about the Omega Air Charger. Take a look at the one entitled "Omega 3 years later and still just as good as day 1". That video was taken 2 years ago and I got in touch with him and he said that he is still using the same Omega with no problems.
Your mileage may vary but I believe that it is as well made as any Chinese compressor out there. Just be sure to let the water flow through the radiator for about 5 minutes after using it for a fill. Mine goes from 3.000 psi to 4,500 in 42 minutes ... not fast, but slow and steady.
Shalom
John