Your Battery
?Lithium and AGM have different safe discharge limits — choosing the right one changes how much of your rated capacity you can actually use.
Lithium batteries are typically safe to use down to 20% remaining (80% depth of discharge).
Solar Input
?Pick your location and month for a seasonal sun-hours estimate — this is a long-term average, not live weather, so fine-tune the slider if you know your conditions differ.
Select a location and month for a seasonal estimate, or drag the slider to set your own. Overcast days, shade and panel angle will reduce real-world output.
What You're Running
?Start from the built-in list of common RV appliances or add your own. Every wattage here is editable — check your appliance's rating plate for the real figure.
Wattages are typical published figures, not exact — check your appliance's rating plate or manual where possible, and adjust here.
Your Result
?Updates live as you type. The battery colour reflects your Days of Autonomy — green means sustainable, amber means plan ahead, red means you're close to your safe discharge limit.
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Fill in your setup above
Daily use
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Daily solar
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Usable capacity
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Net per day
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Estimates only — real-world results vary with temperature, battery age, cloud cover, panel angle and appliance surge draw. Use this as a starting point for sizing your system, not a guarantee of runtime.