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Philip Jones · 03-29-2018, 05:59 AM

On my trailer the jack runs via a single positive lead. Does that mean that, because I do not see a negative lead anywhere and therefore cannot attach its negative lead to the shunt, that the power used by the jack will not be tracked by the Victron?

billrector · 03-29-2018, 06:00 AM

Quote:

Originally Posted by Philip Jones

On my trailer the jack runs via a single positive lead. Does that mean that, because I do not see a negative lead anywhere and therefore cannot attach its negative lead to the shunt, that the power used by the jack will not be tracked by the Victron?

I have wondered the same thing!

GMFL · 03-29-2018, 06:05 AM

Quote:

Originally Posted by Philip Jones

On my trailer the jack runs via a single positive lead. Does that mean that, because I do not see a negative lead anywhere and therefore cannot attach its negative lead to the shunt, that the power used by the jack will not be tracked by the Victron?

It uses the frame as neg(-). If your shunt is the first thing to touch the neg(-) post of your battery bank you will capture every load on the system including the tongue jack, and phantom things like co/propane detector.
Think of if this way. The frame does not generate power. It gets its Neg(-) from battery. Shunt just has to be first in line.

Philip Jones · 03-29-2018, 06:07 AM

Sounds good. Thanks for the explanation.

AirMiles · 03-31-2018, 01:29 PM

Here is a good article about battery monitoring that I found extremely enlightening. https://marinehowto.com/programming-a-battery-monitor/

Adventure.AS · 03-31-2018, 02:47 PM

Quote:

Originally Posted by AirMiles

Here is a good article about battery monitoring that I found extremely enlightening. https://marinehowto.com/programming-a-battery-monitor/

Great article by Rod Collins of "Marine How To". Thanks for sharing.

wareaglewalt · 05-30-2018, 03:21 PM

I'm running into a similar situation with my BMV712. We have 2-6 volt Trojan AGMs that are brand new. Today it was reading -108 Ah (yeah we haven't had much sun) and 11.89 volts with very minimal load at that point in time. But the SOC was around 62%. What I'm really curious about is what to put in for my full SOC? Victron mentions this might be different since I'm using solar, but any ideas what I should program for Charged Voltage? I'm using 217 Ah for battery capacity. The rest of the settings I left as default.