Wanted solar.. bought a standby batt instead
Thought I would add this perspective for weekend warriors:
Bought an x18D last year, and LOVE IT! However, I seem to have this bad habit of booking camping trips with friends who don't need water or elect, so we end up boondocking.
Such is the case again this year. At least 2 trips w/o power. Concerned that our late June outing may require some bed fans, so I've been reading the solar forum for quite a while.
In the end: I purchased a 12v 100ah battery for $65. Put the 100 on the trailer, and now keeping the original 72ah batt as a swap-out if needed.
Last weekend we didn't conserve much just to test the battery theory (3 day weekend). Ran one bed fan at night, normal lights, water pump, etc. Ended with 12.1v standing on the battery and never reached for the other batt.
As much as I'd LOVE to play with solar panels & stuff... I am happy with my extra battery at a fraction of the cost.
Your mileage and voltage may vary, but thought I'd put it out there.. since I spent all winter thinking about this issue. $70 may be the solution for you.
2015 Jay Feather x18D
2006 GMC Envoy XL I-6