Renogy 100W 12V Monocrystalline Solar Kit vs Renogy 400W 12V Monocrystalline RV Solar Kit

Both kits are Renogy monocrystalline PWM systems, so the real decision is size and mounting. The 400W kit is the better buy for a full-time RV or van build: four panels, roughly four times the daily output, and the Adventurer controller handles 12V or 24V banks. The 100W kit is the right starter for a small trailer, a shed or a trickle-charge setup, and it is far easier to mount and move. Owners of both praise the wiring and brackets; the common complaint on the 400W kit is the weight and the space four panels take on a roof.

• Choose the Renogy 100W kit if you have a small roof or limited space, want a simple first solar setup, or need to keep a single battery topped up.
• Choose the Renogy 400W kit if you run an RV, van or boat with real daily power needs and have the roof area and weight capacity for four panels.