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The short answer: To clean your Goal Zero Nomad 20, wipe the solar cells with a soft, damp microfiber cloth using plain water or a mild soap solution, then dry with a dry cloth. Avoid abrasive cleaners, high pressure water, and submerging the panel. For maintenance, inspect cables and connectors regularly, store it in a cool, dry place when not in use, and avoid leaving it in extreme heat for long periods.
The Nomad 20 is a rugged, foldable solar panel designed for outdoor use. Over time, dust, dirt, pollen, and bird droppings can accumulate on the solar cells. Even a thin layer of grime blocks sunlight and reduces charging efficiency. In real world use, a dirty panel can lose 10% to 20% of its output, and in severe cases even more. Keeping the panel clean ensures you get the most power from the sun, especially during critical trips where every watt counts.
But cleaning isn’t just about wiping the surface. Proper maintenance extends the life of the panel and its internal components. The Nomad 20 has a built in charge controller, USB and 12V outputs, and a kickstand. Each part needs attention to keep the whole system reliable.
Here is a safe, effective routine for cleaning your Nomad 20. Do this whenever you notice visible dust or after a dusty trip.
Step 1: Prepare the panel. Unfold the panel and lay it flat on a clean surface or keep it propped up. Make sure it’s disconnected from any devices. If the panel is hot from being in the sun, let it cool down first to avoid thermal shock.
Step 2: Dust off loose particles. Use a soft brush (like a paintbrush or a lens cleaning brush) or a dry microfiber cloth to gently sweep off loose sand, dust, and leaves. This prevents scratching the surface when you wipe later.
Step 3: Dampen a cloth. Get a microfiber cloth and dampen it with clean water. If there is stubborn grime, add a drop of mild dish soap to the water. Avoid using any harsh chemicals, solvents, or abrasive pads. Do not spray water directly on the panel, especially around the seams or connectors.
Step 4: Wipe the cells. Gently wipe the solar cells in a circular motion or straight lines, applying light pressure. Do not press hard. Pay extra attention to corners and edges where dirt accumulates. If needed, use a cotton swab for tight spots.
Step 5: Dry the panel. Use a clean, dry microfiber cloth to remove any moisture. Let the panel air dry completely before folding and storing. This prevents moisture from getting into the electronics.
Step 6: Clean the frame and fabric. The Nomad 20 has a metal frame and fabric hinge. Wipe these with the same damp cloth, then dry. Do not submerge the panel in water or put it in a washing machine.
Cleaning is one part, but regular maintenance ensures your Nomad 20 lasts for years. Here are practical checks you can do every few months or before a big trip.
Inspect cables and connectors: Look at the USB and 12V ports for debris or corrosion. Use a dry cotton swab to clean them gently. Check the cables for cuts, kinks, or frayed wires. If you find damage, replace the cable or contact Goal Zero support. Damaged cables can cause short circuits or poor charging.
Check the fabric and kickstand: The folding hinges and kickstand can collect grit. Wipe them dry and make sure they move freely. If the kickstand becomes loose, you may need to tighten screws, but avoid over tightening.
Protect from extreme temperatures: Do not leave the panel in a hot car for long periods. High heat can damage the solar cells or the electronics. Similarly, avoid storing it in freezing temperatures. Ideal storage is a cool, dry place, ideally in the included carrying case or a protective sleeve.
Keep it dry: While the Nomad 20 is water resistant, it is not waterproof. If it gets wet, dry it as soon as possible. Never store it wet, as this promotes mold and corrosion.
Update your charging habits: The Nomad 20 has a charge controller that protects your devices from overcharging, but it’s still a good practice to avoid plugging in devices that require more than 20W. Always check your device’s power needs.
Many users inadvertently reduce their panel’s lifespan with these errors:
Using abrasive materials: Paper towels, rough sponges, or brushes with stiff bristles can scratch the surface and reduce efficiency. Stick to microfiber or soft cotton.
Cleaning with strong chemicals: Window cleaners, alcohol, or acetone can degrade the protective coating on the solar cells. Always use plain water or mild soap.
Washing under a tap: Running water can force moisture into the seams and damage the internal electronics. Use a damp cloth instead.
Storing while still hot: Folding and storing a hot panel can cause stress on the cells and accelerate wear. Let it cool first.
Ignoring the kickstand: The kickstand is a moving part that can break if forced. Clean and lubricate it occasionally with a dry lubricant like graphite, but avoid oil-based products that attract dust.
Prevention is better than cure. Here are ways to minimize dirt buildup and potential damage while using the panel outdoors.
Use the kickstand to angle the panel: Positioning the panel at a proper angle not only maximizes sun exposure but also allows wind to blow away loose dust and leaves. Avoid placing it directly on the ground where it can pick up mud or sand.
Cover when not in use: If you’re camping and using the panel intermittently, cover it with a dry cloth or a plastic bag when not charging. This keeps off morning dew and dust.
Transport in a protective case: The Nomad 20 comes with a carrying case, but you can also use a padded sleeve. This prevents scratches and impacts during travel.
Shade considerations: While not a cleaning issue, keep in mind that partial shade on a single cell can reduce output significantly. Position the panel so all cells are fully exposed.
No, you should not use a pressure washer. High pressure water can force moisture into the panel’s seams and damage the internal electronics. Stick to a damp cloth.
It depends on your environment. If you use it in dusty or sandy areas, clean it before each use. In normal conditions, a monthly wipe down is sufficient. After heavy rain, check for dirt spots.
If the panel gets wet, wipe it dry as soon as possible with a microfiber cloth. Do not expose it to sunlight to dry, as this can cause water spots and possible heat damage. Let it air dry in a shaded, ventilated area.
For more solar charger tips and comparisons, check out our best solar charger buying guide.
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