Determining the correct inverter size depends on your solar array's capacity and your household's power needs.
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For example, to run an 2400w inverter in an off-grid cabin, three to five 100ah batteries is required for five hours used. This estimate comes from a total demand of roughly 1,300W multiplied by the planned runtime of five hours, which equals 6,500Wh.
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If you need an inverter of 2000W or larger we recommend you find an inverter built for 48V DC, even if this isn't easy to get locally. See “Why 48V is Better” below for the reasons why. You build up voltage by putting two or more identical batteries in series.
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First, determine your battery voltage, which is typically 12V, 24V, or 48V. Use the formula: Required Battery Capacity (Ah)= Total Daily Consumption (Wh)/ Battery Voltage (V)×Depth of Discharge (DoD) Depth of Discharge (DoD): This is the percentage of the battery's.
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