Terrol,
It really depends on what devices you want to run and for how long. Search the forum and you will find a lot on the subject.
If you don't have a residential reefer, don't watch TV, don't have an electric coffee maker, don't plan on using the microwave and camp in temperate climates you can get by for a few days with just a couple of decent sized batteries.
By building an electric budget you will get a good idea of your needs.
Even with a lot of solar, a genny is always handy for those cloudy days.
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Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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