Edit: I am using 3 boards and 3 batteries. I can someone tell me if it is ok to hook up the OUT on these boards in series? I am trying to build a 12v system and I am not sure if this will damage the charging boards. Amazon.com: XCSOURCE 5 pcs 1A 5V Micro USB TP4056 Lithium Battery Power …

TP4056 18650 Charging Board... Series Out?

onesojourner December 7, 2016, 10:10pm 3

Sorry. To clarify I plan to use 3 charging boards with 3 18650s. I will power the boards with 5v. I need to have 12v from the 3 batteries though.

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