When running insane watts like 16000, what all is needed? I have told my friend he will need to get a 370amp alt plus keep his stock one in his Tahoe. Two runs of 1/0 to the rear batteries. This is where he won’t listen to me. He says he only going to run two batteries 😂😂😂. I’ve told him he will need more like 6-10 and he just blows me off. What will happen if he try’s this much power on two batteries? Will it ruin the batteries draining them down too far and within seconds?