Thanks for all the advice so far about installing my EPever LiFePo battery in my Elddis 175. I've installed an EPever MPPT solar charger which now seems to be working well. I plan to install a Victron ip22 mains charger - yes I know the original BCA acts as a 12v supply.
My question is about isolated or non isolated DC-DC. I have bought a Renogy 40 DC-DC thinking it was isolated as it had 4 terminals, but now found it is not (didn't check the specs closely enough!). I have checked the negative chassis conductivity and I don't think the negative of the hab battery is bonded to the cab chassis - I'm not getting 0 ohms between to two negatives although there is continuity. There is also 12v between the two. Do I need a different DC 2 DC or will connecting the two provide enough and not cause problems? I intend to put a relay into the hab battery +ve to switch off when the ignition is running via the D+.
Any thoughts before I return the unit?
TIA
My question is about isolated or non isolated DC-DC. I have bought a Renogy 40 DC-DC thinking it was isolated as it had 4 terminals, but now found it is not (didn't check the specs closely enough!). I have checked the negative chassis conductivity and I don't think the negative of the hab battery is bonded to the cab chassis - I'm not getting 0 ohms between to two negatives although there is continuity. There is also 12v between the two. Do I need a different DC 2 DC or will connecting the two provide enough and not cause problems? I intend to put a relay into the hab battery +ve to switch off when the ignition is running via the D+.
Any thoughts before I return the unit?
TIA