Parallel Battery Strings - worst solution ever?

As an addition to my last video, I want to dig a bit deeper into the topic of having battery strings/banks connected in parallel.
Lots of you guys left amazing feedback and shared your experience with that. Is there really a concern of paralleling battery banks?

Orion BMS - Strings, Parallel Cells, and Parallel Strings (17page PDF)
https://www.orionbms.com/manuals/pdf/parallel_strings.pdf

The Battery Box 2.0!? Or what shall we do?
https://youtu.be/zSMiB4_kVYg

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Видео Parallel Battery Strings - worst solution ever? канала Off-Grid Garage