“How long does it need to be in the sun?? Before it can charge a cell phone??”
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As we detail in the manual we do not recommend using solar charging as primary means of charging the item, we suggest you use the solar charging feature as an Emergency option to charge the item AFTER you have charged the item fully using charging cable. it would take upwards of 3-4 days to fully charge the item using only 7-8 hrs of optimal sunlight per day. From 0% it would take about 3-5 minutes before you can charge a device using the powerpack.
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