Jun 16, 2017 - 08:57 AM
Think of your battery as a cup of rain water and the panels as a rain funnel.The larger the funnel ( watts) the quicker you will fill up your cup. Does that make sense?
We would need to know your RV needs to pick a panel set for you.
Can you give us more information on what you intend to do in your RV?
Below is a link to the sizing and application chart, that may possibly help you choose also. Hope this helps.