I have one of these feeding a 340 Ah lithium battery and so far very impressed. The only criticism is the extreme heat that the unit runs when charging under 240v. Seriously I have had heaters that don’t get as hot as this unit. I managed to get the heat down by turning installing a fan at the back of the unit (I’m surprised that it didn’t come with some type of fan), I also dropped the change the charging amperage down to 26 Ah, which also helped.
I have done that and all it show is the charge is coming from the load not the redarc system. Not a big issue for me as you can see what current is going into the battery. I had 61 amps the other day 22 from the redarc solar panels and the rest from 2 Victron MTTP solar charges
