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Here's my corrected schematic, for what it's worth

Really helpful image. Thanks for sharing it. I had the same question about "shorting" and this clarifies perfectly.

(I believe my previous post was in error)

In other threads, these related images have been shared (supposedly supplied by Jaibada when people asked)...

Here's somebody who I think has it right... See response #16 in this thread... https://diysolarforum.com/threads/help-decoding-jbd-bms-instructions.30658/post-475649 In my schematic, I started with BC1 and forgot there was a BC0. So I started the shorted leads at BC13 thinking it was BC14. I...

This is helpful. Just saved me from a mistake. How long have you been running it?

...and here's the note from the JBD BMS specification document...