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Looking for a circuit board for my widget
#1
Hi all,

New here to the second life site. wondering if anyone can help me find a circuit board.

I am looking for a board that can 

1) charge, protect and balance 4 each 18650 Li-Ion in series from a 500ma regulated 12vdc power supply
2) convert the output from from the 4 cells to a regulated 12vdc for a less than .5 amp load
3) Simultaneously convert a second output to a regulated 5vdc for a less than 1amp load

Be interesting to see if such an animal exists.

Thanks,

Dave
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#2
A quick eBay search found 4S BMS, and DC-DC supplies with your specs for only a few of dollars.

3 separate boards. I think you'd be lucky to find an all in 1 for that.
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#3
(05-14-2020, 01:02 AM)Wayne\s World Wrote: A quick eBay search found 4S BMS, and DC-DC supplies with your specs for only a few of dollars.

3 separate boards. I think you'd be lucky to find an all in 1 for that.

Yes, thank you for your response. This is why I asked the question because I have been using 3 separate boards and was hoping to find a way to do in one. 

Maybe this doesn't exist. I was thinking this wouldn't be too much different than a circuit board from one of those battery powered phone chargers with the USB output except I need it to have a second output of 12 volts.
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