[tgregg]

Seems unlikely that a 5 amp fuse could limit the current to 60 watts. If your charger tried to draw 120 watts the fuse would simply blow.

It would be more likely that voltage might be different at the 12 volt outlets. Measure the voltage present at each outlet with a volt meter.

 

[tgregg]

Is it possible the GZ has a slow/fast charging setting? Like maybe a 60 or 120w option?

No. The goal zero support told me the van is not charging it as fast as it should

That's odd. The picture of the Yeti 12v Car Charging cable on the goal zero web site shows a switch on the front thag says'5A or 10A'.

Is that a newer model than you have?

 

[tgregg]

The yellow 20v