I hardly ever look at the "calculated time remaining on the battery." I think that data is a lot more useful when the controller is connected to a system where there is some kind of regular-ish load. I just don't think it's very useful when you have the compressor from a fridge (or the fan for a furnace) kicking on/off at irregular intervals. I mostly focus on the SOC (voltage) and the net amps consumed. Just my two cents.jbajor said:I am setting up my new Victron Smart Shunt (IP65, 300 amp) and, in my research, seen MANY references to setting max discharge to 50% as well as 80% discharge (50% remaining charge and 20% remaining charge). Clearly this makes a significant difference to the calculated time remaining on the battery for a given load. Are there any real world uses that you have had with respect to how far you allow your AGM battery to discharge without ill effect? Where 50% is considered 'safe, I do not want to short change my capacity but I also do not want to prematurely damage my battery. What say you oh wise ones? Cheers!