That is my understanding. I am a mechanical guy and terrible with electronics but the guys that did my electronics told me a LCB prevents a DC pump from stalling. It is still a magic black box to me I have been learning using a Gast 12V diaphragm pump. I have destroyed 2 of them mechanically in the last few years but have yet to ruin one electronically. Give me a little more time... I bet I can do it