Feature: High Efficiency Conversion Rate ALLPOWERS Polycrystalline MC4 solar charger has high efficiency conversion rate, which is up to 21%, while most of the similar products on the market is 15% or even lower. Whether you're charging a generator phone laptop or refueling a power pack, solar power has you covered. Our foldable portable polycrystalline solar panels are rugged, reliable, and easy to use. Harness the sun with portable solar power wherever you are. .
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