I'm using this system (3 of the balancers) to balance 16 Battle Borns in a 4S4P configuration. I was having a lot of problems with one BMS opening up and tripping low voltage disconnect. Before you put them in, do a full top balance on your batteries then wire them up and put in the balancers, they're awesome. Forgive the grainy photos, was using the thermal cam. You can see the one on the left was balancing, you can also see the internal BMS in the BB on the right was much warmer than the other two, something I need to speak with them about. See attached PDF for info.
Jen
Jen