Blog - Page 2 of 3 - Sun Amp RV

How to Connect Solar Panels to an MPPT Controller

Check input limits first: Verify your array’s cold-weather open-circuit voltage stays within the controller’s maximum input rating.

Audit daily Wh: Sum each load’s wattage × hours per day to find your total daily energy need.

Best Overall: Battle Born Batteries 100Ah 12V LiFePO4 — Full-time RVers who want long-term value and deep usable capacity

Best Overall: EcoFlow Delta 2 — RVers who want fast recharging and flexible expansion in a mid-size unit

Best Overall: Renogy Monocrystalline Solar Panel — Building a scalable roof-mounted boondocking array one panel at a time

Measure round-trip: Always count both outgoing and return conductors when calculating cable length.

Audit daily Wh: Sum each load’s wattage × hours per day to find your total daily energy need.

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Plan the layout first: Measure roof space and plan the cable route to the controller before drilling or bonding anything.

Know your daily Wh: Sum all loads to find total daily energy consumption.