The 5 Best Portable Solar Chargers of 2021 -
Due to their thinness, CIGS solar chargers aren't as durable or long-lasting as either crystalline type. CIGS aren't as efficient as monocrystalline or polycrystalline solar chargers in sunny conditions. Price: CIGS solar chargers can cost anywhere from 50 to 300, depending on their power and quality.
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