2021 1500 136"WB High top
Ditto on what @SteveSS wrote. As far as the combo unit, I literally shut off my solar at its disconnect switch when I need a larger amount of charging. The up side is one unit takes less space, and the renogy version trickle charges toe van battery when it's not driven much. So yes, it's all a matter of what works for you.The dual B2B-solar controller units are quite popular, but be aware they only do one of those things at a time. That's not bad, it's just a personal choice.