Under optimal conditions, with a 100 watt solar panel you will get 5 to 6 amps per hour or somewhere between 25 to 40 amp hours in a day. So with your lite usage and led lighting in most new TCs you will probably do fine, although I think most would recommend a second panel. With solar, your milage varies with the weather and how shaded the panels are. I would recommend that you put AGM batteries in the TC as they do charge faster than lead acid batteries. They also perform better in cold weather.
I put two 100 watt panels on our Adventurer TC. Like you we migrated from a 5th wheel. I have two group 27 AGM batteries. We try to conserve on the batteries, but since both my wife and I have CPAPs I wanted to make sure we had enough battery and the ability to recharge. Turns out the CPAPs only use about a combined 7amp hours a night and that is about 8% of the usable capacity of the two 89 amp hour AGMs
There are a number of discussions on solar in the forums. You might want to do a few searches.
Jim
Jim
