Sunnytech 3.5w 6v USB Mini Solar Panel Module DIY Polysilicon Solar Epoxy Cell Charger B034


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BLOCKING DIODE INSTALLED—- A blocking diode installed already in the backside to protect the solar panel from over-charging and current backflow.
SOLAR CHARGING—- Use the USB2.0 interface, it can charge power bank, MP3, MP4 and other digital products. In any sunny place, it will work for you.