Smart alternator charging

Rapids

Member
I have a T6.1 with a smart alternator, I have a Victron 12 12 30 non isolated DC DC charger setup to charge my 230ah fogstar underseat battery. I dont have any solar setup and as long as my dc charger does its job I am fine. Problem is at times the charger does not charge adequately and the dc charger shuts down due to low input. I am aware that this is an issue with smart alternator and am looking at running an ignition switched live to a voltronic D+ simulator and on to the H terminal on the dc charger. I will also shut down auto engine shutdown in tge victron app. Has anyone here done this or is there a better option. ?
 
What is this Voltron’s stimulator wizardry of which you speak? Just run an ignition switched live to the Victron H terminal, job done.
 
A switch to isolate the 12V ignition feed so you can simulate what's happening at the moment?
You could stick an inline fuse in but don't bother with a switch.
 
I have a T6.1 with a smart alternator, I have a Victron 12 12 30 non isolated DC DC charger setup to charge my 230ah fogstar underseat battery. I dont have any solar setup and as long as my dc charger does its job I am fine. Problem is at times the charger does not charge adequately and the dc charger shuts down due to low input. I am aware that this is an issue with smart alternator and am looking at running an ignition switched live to a voltronic D+ simulator and on to the H terminal on the dc charger. I will also shut down auto engine shutdown in tge victron app. Has anyone here done this or is there a better option. ?
You can adjust the set point voltage at which it shuts down (engine shut down detection) in the app. had to do this with mine. Been fine since.
 
If I remember correctly, I spent a bit of time watching the voltages and adjusting by 0.1v at a time and settled on the screenshot attached.

Screenshot_20260604_131430.webp
 
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