Some years ago I acquired a number of 7s3p LiFePO4 A123 modules coming from EV battery packs. They are special because of the 7s configuration giving a voltage range for a "48V" battery from 44.5 - 49v. Low but still well within the specification of a Multiplus II 5000W 48v.
These modules have been waiting for a decent BMS solution. I recently discovered https://www.thunderstruck-ev.com/ - They have a BMS solution for these A123 and finally I can set them to work.
They work fine in a 48v solution, but the bottom limitation of the Multiplus for float Voltage is a small issue. 48V is a but to hight.
As I am building this solution now I have not yet connected my Bluesolar MPPT, but as far as I can tell, the MPPT does not have a similar "bottom" float voltage limitation like the Multiplus.
With an increasing number of available ex EV battery modules with potentially "strange" voltage - and people moving away from old fashion lead acid - ....
... are there any plans to widen the settings of these Multiplus voltages allowing for full usage of these strange battery module configurations?
