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Engineering
Electrical Engineering
Building a solar phone charger
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[QUOTE="meBigGuy, post: 5415522, member: 391788"] I cannot tell from your post what you are really doing (how you are going about it). Are you charging the NiMH with the panel, and then the LiPO from the NiMH? If so, you need a proper LiPO charger (see [URL]https://en.wikipedia.org/wiki/Lithium-ion_battery#Charge_and_discharge[/URL]) If you post a sketch and part numbers, we can set you straight. This is two projects in 1: 1. properly charge your batteries from a solar panel, and then 2. properly provide 5V to the phone to charge it (or properly charge your LiPO batteries) Depending on the phone, #2 can be tricky if you want optimum performance (quick charge) There are plenty of these available cheap, and ruggedly built. There is some significant design work required to get it right. just google "solar usb charger" [/QUOTE]
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Building a solar phone charger
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