PowerGreen Solar Charger with Dual USB 21W Foldable SunPower High Efficiency Outdoor Solar Panel for Cell Phones and All 5V Digital Devices High Conversion Efficiency: Sunpower mono-crystalline solar panel increases conversion efficiency up to 24% which is much higher than common solar panel charger. Dual USB Outputs: Provide enough power to charge two devices at the same time when you run into embarrassing power outage moments. Highly Portable: Foldable design for easy carry and transport, water resistant […]

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