I have a 150/100 mppt controller hooked up to 12 320 watt 40 volt panels in a 3 in series with 4 sets of 3 in parallel on a 24 volt system with a 550 amp/hr battery bank. Intrestingly I found that when the Victron was putting out the full 100 amps charging, my input from the solar panels was just 25 amps.
Well my total solar output from those 12 panels can do up to 100 amps so it appears I have up to 4 times more charging capacity than a single controller can make use of, so my question is this, I understand controllers can be stacked but I can't find any info on how to do that. Like can I just add another controller & just link the battery outputs or is there a special hookup method to sync more controllers?