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I have two LiPo batteries (18650) connected to a 2s PCB protection circuit. I can read a voltage at the b+ and b-, which is about 7.03 V but there's no voltage at p+ and p-. Is there something wrong with my circuit or is my board damaged? Here some Images of my build. Sorry for the Google photos link, I get an error if I try to attach my photos to this post.

enter image description here https://photos.app.goo.gl/oVLaHCQpMJgqAEr68

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  • \$\begingroup\$ please disconnect the red wires and measure again. No idea what the blue PCB is doing. Mostly, yes something is wrong with the blue PCB.. are the batteries hot? \$\endgroup\$ – Umar Jul 8 '18 at 15:40
  • \$\begingroup\$ No the batteries are cold, but I got a short circuit when I attached the cables, could that have damaged the PCB? \$\endgroup\$ – Janik Jul 8 '18 at 15:41
  • \$\begingroup\$ Yes. If there was a short circuit you proobibly killed it. \$\endgroup\$ – MadHatter Jul 8 '18 at 15:43
  • \$\begingroup\$ the PCB gave away it's life for no reason. Why don't you remove the blue PCB and see. before that, again i ask to measure the voltage after removing the red cables. \$\endgroup\$ – Umar Jul 8 '18 at 15:45
  • \$\begingroup\$ Ok I detached the cables and I still measure no voltage at p+ and p-, than I have probably killed the board, \$\endgroup\$ – Janik Jul 8 '18 at 15:47

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