So I took some new thermal images of the Lite with different charging currents.
It was hooked to a DC load and I was supplying different charging currents via programmable PSU. The temperatures were allowed to settle for 10 minutes before taking any images. Room ambient temperature was 22C.
5A:
8A:
10A:
11A:
12A:
Used charging cables were quite thin at 20AWG, which is starting to be on the limit for what I would recommend for 10A, but still usable.
Thicker ones could be used to lower the resistive losses in wiring itself and to conduct heat away from the BMS itself for extra cooling. I’d say with thicker wires (16AWG), 12Amps is doable, but I can’t say how the thermals will be if the unit is stuck into a tight enclosure.
Wires (20AWG) measuring at 65-70C on the PVC insulation @ 12Amps
I’d expect balancing to be limited in this case, especially during the high current CC-stage. It would likely improve towards the end with the CV-stage, as the current starts to ramp down and there is less heating happening on the charging Mosfets and current shunt.