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Amazon.com: Solar Power Bank 26800mAh, Riapow Wireless Portable Charger Fast Charge 3.0A Solar Charger External Battery with 4 Outputs & Flashlight Phone Chargers for Phone, Tablet and Camping Outdoors : Cell Phones
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Bluehive 4,000 mAh Solar Charger Compatible with iPods, iPhones, and Most Mobile Devices | Canadian Tire
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USB / DC / Solar Lithium Ion/Polymer charger [Rev C] : ID 390 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Why don't smartphones have a built-in solar charger? There is plenty of surface area on the back of the phone and even the screen itself could be used. - Quora
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