Portable Solar Calculator

Size a portable solar panel and battery system for camping, RV, or emergency power based on device loads.

Input Parameters

Results

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Daily Energy Need
Wh
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Panel Size
W
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Battery Size
Wh
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Est. Weight
lbs
Note: Portable panels are less efficient due to suboptimal angles. Use 0.75 derating factor. LiFePO4 batteries preferred for portability and safety.

Reference

Daily Wh = Device Load x Use Hours Panel W = Daily Wh / (Sun Hrs x 0.75 portable derating) Battery Wh = Daily Wh x 1.5 reserve + Daily Wh Weight: Panels ~0.013 lbs/W, LiFePO4 ~0.009 lbs/Wh