Using an AC NOCO battery charger with REDARC BCDC 1225D (1 Viewer)

[Land Shark]

My current setup is pretty much the standard around. Starter battery with house battery being charged with the REDARC. My question is when I am not driving the 100 daily and want to keep the house battery healthy can I just connect NOCO to the house battery and charge/top off/ maintain health without causing damage to the REDARC? I have reached out to REDARC but in the meantime wanted to hear from the collective. Anyone else running a similar set up and using the NOCO.

 

[IslandCruiser23]

I have this setup. it will not hurt the redarc 1225 but when you charge the main battery it will try to charge the house battery because the voltage rise to charge the starter battery will trigger the 1225 to start charging the house battery. I called Redarc and they said to avoid this you would need to disconnect the starter battery from the redarc 1225 and then charge normally.. I went a step further and put 2 40 amp breakers in the system so I could disconnect both batteries and then charge both using a Noco 2amp - 2 battery charger... I then monitor both batteries with a dual voltage display.... Hope that makes sense..

it would work if you have a 25amp charger on the starter.. it would charge the house until full and then charge the starter..

 

[Land Shark]

Thanks, I appreciate that info. I did hear back from REDARC and they confirmed that if I connect the NOCO to the house battery that it will not harm the charger etc. if left connected. I leave my fridge on 24/7 in the 100 so always drawing on the battery.

 

[LandLocked93]

Agree, there shouldn't be an issue.
The RedArc has high internal impedance on it's output to prevent another charge source from entering thru it's output.