Not 100w but either 30W or 85W depending on your model. I have the 30W on my Rubicon that's basically a trickyle charger for the shitty batteries but it will maintain a great charge that I can leave my vehicle off with stereo playing basically indefinitely.
I got mine from Renogy. The 100 watt panel is enough to keep our RV's batteries charged when we are off grid (but we don't have an inventor). I rigged the controller to use it to charge my Jeeps batteries if we ever decide to go overloading and park the Jeep (and fridge inside) for a few days.
Not sure what budget you want to be in for the solar but it's worth checking out the solar blanket options too. Especially for size and weight. You can get 100-200w + in a 6-8lbs package compared to 25lbs or more in a suitcase. Also form factor is significantly smaller. A few brands are Cruxley field goods and Off grid trek. I'm sure there are others too.