100 watts may be enough, but no need to have four 25 watt cheap Harbor Freight panels when you can fasten one 100 watt panel for abt $100.
If you have two house batteries, I would recommend two 100 watt panels.
That is about $200 and you have an inexpensive, but efficient way to charge batteries (and even boon-dock)
You can also mount flexible panels instead of solid panels for a small additional cost, but much easier to mount and quick to install.
Search the Forum for lots of insight on this topic.
Please share your final mod with photos and analysis.
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'17 Vegas 24.1
Fallbrook, CA
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