We recently completed 12 days dry camping in Idaho. This was our longest dry camp in our 195BH so far. Needed to keep our battery charged up.
After much research and talking with two friends who own them, we bought a Renogy 100 Watt (two connected 50 Watt panels) portable solar suitcase with controller from the Renogy factory (same price as on Amazon). The current model has a 30 Amp charge controller (upgraded from the earlier 10 Amp controller).
This solar suitcase worked great! We kept one 27 Group RV/Marine battery fully charged in good sun.
What we changed: The supplied 7 ft. 12 AWG wires with alligator clips on battery is way too short. We purchased 20 ft. 10 AWG 45 amp rated zip wires with power pole connectors from PowerWerx online. I followed the YouTube video "Renogy Mod 3 3" by Rob Nada for the correct PowerWerx wires and power pole connectors. Note: This change may void the warranty but it is necessary to get the solar panels away from shaded areas.
For the 12 days, our biggest drain on the battery was our 24" LCD TV (62 watts) and Direct TV DVR box (34 watts). We ran them for 5-6 hours each evening using a 175 Watt Go Power inverter. By morning our 27 Group battery was 12.2-12.3 volts (60-70% charged). Our solar suitcase took about 6 hours to fully recharge the battery in good sunlight. It will also charge in partial sunlight, but it takes more time. You have to keep moving the panels each hour or so or position it where it will get the maximum sunlight if you leave your campsite for awhile.
We have a backup 27 Group battery, but not sure we need to connect it in parallel to the other one. We conserve power, so the one battery seems to take care of all our electrical needs (lights, TV/DVR, cell phone charging, bathroom fan, pump, water heater ignition).
Hope this helps anyone looking into a portable solar setup. Questions?