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I would like to build a solar charger for a phone/powerbank. I bought 2 of these solar panels which already have DC-DC converters on them. My questions are:
Any suggestions will be highly appreciated! Thank you in advance!
I would like to build a solar charger for a phone/powerbank. I bought 2 of these solar panels which already have DC-DC converters on them. My questions are:
- How can I combine their power to make a stronger charger? It seems weird to combine them after the DC-DC converters. Or do I just do that and connect it to a female USB port (since they are glued to the panels)?
- If I do connect them together after the DC-DC converters, the voltage will at times with limited sun be around 4.4V. This does not damage the device that is charged, correct?
- I assume I don't need flyback diodes if I connect them after the DC-DC converters. Is this correct?
Any suggestions will be highly appreciated! Thank you in advance!