Potentially shorted battery circuit, please help.

[Flavor]

I asked about the battery, because the electrical engineer looked at your photo and thought that the battery was likely plugged in backward.

Another cause is if you had the battery shorted (as you mentioned) and then tried charging it.

To anyone else that comes along to read through this, be sure to trim any excess off the "bottom" side of H2 and H3 (the red connectors shown in the photos).

@metaColin, I will email you direct to figure out a way to get this fixed.