Use the calculator below to size your system: Estimate your array size, panel count, battery capacity, controller current, and inverter size. Adjust defaults to fit your setup. Tip: Find yours via NREL PVWatts, then paste it here. Whether you're powering a cabin, RV, tiny home, or just want backup energy, this tool gives you a solid starting point. Rule of thumb DoD: LiFePO₄ ≈ 80–90%, AGM ≈ 50%. Result shows. . On average, a 4kW solar system can provide up to 3000 watts per day, sufficient to charge a 3-bhk home for 12 hours. Jackery Solar Generators are sustainable and economical generators that combine portable power. . For example, a 400W panel is rated at 0. Divide that number by the number of days in the month (typically 30) to calculate your average daily. .
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