Wow,
Here is the link to the youtube video I think you are talking about. Amazing. Thanks. This might actually be sensible for me, as it means I can mount them nicely in a wooden box in the boat without changing the existing (Winston) cell connection straps. Thanks a lot !
Cells are always below 35C I would say. No heat source near them. Inverter a way above.
Yeah, I have not noticed much effect from the REC 2.5A active balancer, but then the cells never needed much before, as I would manually top balance once a year (Will Prowse style.)
I have a little heltec 4 cell balancer, but I doubt I would use it after seeing Andy OGG's results from balancing at lower voltages.
So, it looks like I have to just consider that I have a smaller battery capacity now.
I will check out Internal Resistance history, I can download that from the REC-BMS for an extended period.
How do I interpret this data?