1. Confirm device power and add 20–30% headroom.
2. Pick panel wattage: phones (10–20W), tablets/cameras (20–40W), laptops (60–100W via USB‑C PD).
3. Size battery by watt‑hours; weekend kits 60–100Wh; laptop days 150–250Wh.
4. Use short, quality USB‑C PD cables; keep connectors clean and dry.
5. Track the sun and re‑aim hourly; avoid shade bands.
6. Safety: don’t cover charging packs; store at 40–60% if unused for a month.
7. Troubleshoot with a USB watt meter; swap cables; verify PD profile.
**Tip:** Passthrough charging keeps devices powered while topping the pack.
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