Calculate exactly how many amp hours (Ah) of battery you need for your van build based on your appliances and usage.
Daily Amp Hours (Ah) = (Total Watt-hours ÷ System Voltage)
Total Capacity = Daily Ah × Days of Autonomy
Final Battery Size = Total Capacity ÷ Depth of Discharge (80% for LiFePO4, 50% for AGM)
💡 Pro Tip: Always add a 20% buffer to your calculations. Most people underestimate their power needs.
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