I need a method to measure the load resistance attached to the terminals on a battery. I want to determine this load before I turn mosfet on to let battery pack discharge. Most important I want to check for a short at the terminals before turning battery on. I have a 5 volt cpu to control system. I am thinking of trying to use a low ohm shunt and current sensing ic along with a current limiting resistor. Issue is trying to measure difference between a 0.01 ohm load (1500 amps) vs Short yields only a few uA difference, which will be hard to measure be that precise with circuitry. Without limiting resistor even a 0.001 ohm shunt yields hundreds of watts at high loads.
Is there another method I could use?