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Easy to use USB Type A circuit board for solar projects. Input voltage 2.6V - 5.5V. Output is 5V up to 2 amps. Will work well with a 4AA battery pack using Ni-MH batteries. Connect solar panel to battery pack with a blocking diode. Use 6V solar panel (or 2 X 3V) with a 4AA battery pack.
LED indicator is green if OK and red if voltage is low.
Will work with iPhones, smartphones and tablets.
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All prices are in USD.