victron dc dc isolated connected as non isolated, is it ok?
Lets say I have this one.
But my ground/negative is all over the place. I wont be able to seperate them now, maybe in the future. Can I connect the ground as commond and use it as a non isolated?
Yes ofc, the connect both grounds as you like, if they then are connected…c"est la vie.
There are several scenarios where a 12V system could be exposed to 24V. If your 12V system is designed to handle 24V, then there’s no issue. However, if you have devices that aren’t rated for 24V, they could be damaged or even destroyed.
More importantly, applying 24V to a 12V lead-acid battery can be extremely dangerous, potentially causing overheating, gassing, or even an explosion. Always double-check voltage compatibility to avoid serious risks.
Thank you, and sorry. >My DC DC is a 12-12 not the one on photo, my mistake.
My boat have a victron energy argofet 200 3 . connected to two diffrent battery banks.
Problem is that one bank is acid and one is lithium. This was installed from a electrical company, but its wrong! the victron energy argofet do not change any charing characterstic.
So two diffrent battery types is not good ??
I will replace it with one DC-DC.
Dynamo → Start = acid
DC-DC from start to Aux lithium,
Some people run lithium and lead acid together. The argofet is very good, and it allows charging from one source without connecting them in parallel. The lead acid may need an equalisation charge every now and then, that will be the only difference in charging. If you are charging from an alternator, the voltage may be too high above 14.6V for example.
If you don’t separate the grounds and you have a fault somewhere, the lithium can be connected to the lead acid.