Yea, understood Ryan.....the only reason I was running them was that without it in the circuit, I could not charge both packs at once with my 10S, as there still was a common ground in the 1221, 1222, and 9100 bus. Actually, the voltage drop is not always 0.6 like in the regulators, but about 0.47 at low to intermediate current flow, but still a drop.