Having recently completed my 20w solar charge controller well almost, I still have to finalize the power output. As it stands I'm able to charge such items as battery banks & cellphones via 5v usb. To charge 3.7v 18650 batteries the voltage has to be reduced from 5v. A simple matter with TP4056 lith...By: terrible tinkerer
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from Instructables: exploring - technology - robots http://ift.tt/1ytl8QT
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