Grr. it looks like most of the protection ICs that I've seen that are available in small quantities and have over-current protection are at or below 0.3 cell voltage drop. My 2S pack drops about 1v at 10A at full duty cycle. I could probably blame 0.1~0.2v on my poly fuse, and that still leaves about ~0.4v drop per cell- about 0.04ohm internal resistance each cell. Way too close to max current on those protection ICs ;/ I could probably get it to work well at 0.4v drop per cell but those are available in full reels of a few thousand each. Maybe I could try get a handful of samples and find a lower quantity source, but to be honest, a 16A poly fuse and the smart high side switch (which actually protects closer to 20~30A at the 5~7V range, are sufficient overcurrent protection. In this case, I'll look for a simpler over-voltage + over-discharge protection at least and maybe stick in an integrated charger. I want to try get as many features added in each PCB run for R&D purposes.. @OF @hardboiledfrog @KeroZen anyone else any suggestions?