I am unsure if this is a battery or shunt problem but I have a 100Ah battery in my camping set up with the smart shunt to show SoC and usage. I am only ever able to use 50Ah of the battery according to the shunt, and then the battery shuts down. The shunt shows 100% at the start with 13.5V+ each time. Is there a setting I am missing that is only allowing the 50Ah to be used, then the shunt shuts off? any advice will be welcomed.