I am looking for a 3.7V LiPo battery circuit that will handle over-voltage protection along with charging and 3.7V to 5V boost. I've found this popular pcb on ebay:


It seems to cover all that I need but I can't tell if it steps down the charging voltage or if I have to provide it with a regulated 3.7V supply to charge the battery with? I can tell that one IC is an 8205A which provides all the over/under protection features but I can't read the numbers on the other ICs to look up data sheets. Is there a sure way to tell if this pcb has this feature or not?


closed as off-topic by Ricardo, Rev1.0, nidhin, Daniel Grillo, Matt Young Mar 10 '15 at 14:21

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That board has no charging functions at all. It will provide over-voltage protection, and will give 5 volts out, but any charger is entirely separate.


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