Arvee AmpSmart vs Solar Setup

Understand your RV electrical system with Arvee AmpSmart — the most comprehensive free RV power calculator available. Whether you're plugged in at a campground, dry camping off-grid, or planning a battery and solar upgrade, AmpSmart helps you make informed decisions about your RV's electrical system. THREE CALCULATION FLOWS: Shore Power Check — Will running these appliances trip my breaker? - Analyze 15A, 20A, 30A, and 50A hookups - See total load vs. available capacity at a glance - Get warnings for overloads, surge/startup risks, and the 80% continuous load rule - Understand shared circuit limitations on household outlets Off-Grid Power Budget — How long can I last on battery and solar? - Model your battery bank by chemistry (Flooded Lead-Acid, AGM, LiFePO4) with accurate depth-of-discharge and efficiency factors - Add solar panels with location and season-based peak sun hour presets - Factor in generator support, inverter efficiency, and cold weather derating - See daily consumption breakdowns, endurance estimates, and solar balance System Builder — What battery, solar, and inverter setup do I need? - Set your off-grid goal (days between charges) and let AmpSmart size the system - Compare battery chemistries side by side (capacity, cost, weight, lifespan) - Get solar, inverter, and charge controller recommendations for your location - Enter your existing system to see exactly where it falls short REAL-WORLD RV APPLIANCE LIBRARY: - 37 curated presets with practical power values (A/C, microwave, fridge, CPAP, Starlink, and more) - Three usage modes per appliance: hours/day, minutes/day, or duty cycle % - Add custom appliances for anything not in the library - Surge/startup wattage tracked separately for compressor-based loads LEARN AS YOU GO: - Contextual help articles at every step explain watts, amps, battery chemistry, solar peak sun hours, inverter efficiency, and more - Built for RVers who want to understand their system, not just get a number SHAREABLE REPORTS: - Generate a branded Power Profile Report from any calculation - Share with others or download as a file FREE & PRIVATE: - Completely free — no ads, no in-app purchases, no paywalls - No account required — just open and calculate - No personal data collected — your information stays on your device - Works offline — no internet connection needed - Available on iPhone, iPad, and Mac Made with care by Arvee — the RV trip planning platform that helps RVers stay connected with friends on the road.

Plan your off-grid solar setup in minutes. Solar Setup Calculator turns your appliance list into a complete, sized system — solar panels, battery bank, inverter, and charge controller — with real-world cost estimates and payback time. No spreadsheets. No installer sales calls. Just answer three questions about where you live, how much power you use, and how many days of battery backup you want — and the app does the off-grid solar math using the same formulas professional installers use. WHY IT'S DIFFERENT * Off-grid solar sizing built for everyone, not just installers. Pick appliances from a built-in catalog of 30+ common loads (fridges, lights, laptops, AC units, water pumps) or type in your own watts and hours. * Real sun-hours data, not guesses. The app pulls NASA POWER satellite data for your exact location on demand, so your panel count reflects what your roof actually gets — not a generic regional average. * Real battery science. Lithium and lead-acid have very different depth-of-discharge limits and round-trip efficiency. The calculator handles both correctly so your battery bank is sized for what it can actually deliver, not what's printed on the label. * Inverter sizing that handles surge loads. Air conditioners, fridges, and pumps draw 3 to 5 times their rated wattage during startup. The app accounts for this so your inverter doesn't trip out on day one. * Cost and payback estimates. Add your local kWh price and see how many years until your solar setup pays for itself versus staying on the grid. * Save and compare. Try different configurations side-by-side — 12V vs 24V vs 48V, lithium vs lead-acid, 1 day vs 3 days of backup — and see which one wins on cost and reliability. * Export as PDF. Share your sized system with an installer or supplier as a clean, professional PDF — no spreadsheet attachments. BUILT FOR - RV and van life — calculate solar for your rig with realistic appliance assumptions - Tiny house and cabin — design a system sized for your real consumption - Backyard sheds, workshops, and outbuildings — keep your tools running without trenching mains - Backup power for grid-tied homes — size a battery bank for blackouts - Marine solar setups — the same off-grid math works on a boat FREE FOREVER - Unlimited setups and saved designs - Cloud sync across devices (optional) - Full off-grid sizing wizard - NASA POWER sun-hours refresh - Built-in solar education library PRO — ONE-TIME $6.99, LIFETIME - PDF export of your sized system - Side-by-side comparison of multiple setups No subscriptions. No ads. Pay once, keep forever. THE STORY Solar Setup Calculator was built by an off-grid enthusiast frustrated with calculators that sized panels for daytime use only and left batteries empty by midnight. The app uses the full daily kWh figure for panel sizing, accounts for system losses, and handles depth-of-discharge correctly — the same way a professional designer would. Whether you're planning a weekend cabin, going full-time off-grid, or just curious what it would take to cover your fridge with solar — Solar Setup Calculator gives you a real answer in 5 minutes. Download free, design unlimited setups, and pay once for Pro if you need the comparison view or PDF export.