Hi all, here my vrm screenshot, as you can see the mppt is charging 73W and i’m using 22W of dc (some lights, router etc). the battery is charging 50w, so why the DC power is not negative? if I use the Orion TR the DC Power goes negative meaning charging. so why not the mptt for coerence? or I do…

Yes, the DC loads is anything that does not have its own measurement so it does not include the solar nor the inverter.

If you do not have a SmartShunt on your DC loads set as an energy meter then the DC loads is only an estimate based on other info. See the DIY FAQ. [image] The DC System Power on a Venus device is jumping, erratic or does not match other loads DIY This topic covers the re…

I have a smart shunt bmv-712 isntalled as main battery monitor. does it means that I need to buy another shunt and set it as energy meter? could you please explain better? thanks

You have a BMV-712 as a battery monitor measuring what goes in and out of the battery which is very accurate. You have current measurement built in to your other Victron devices but this is slightly less accurate. You have DC loads that are not measured and also system losses. The calculation works …

thx for the clarification but in the diagram I have already C as inverter, solar and orion. I do not understand why adding a second shunt as “A” will measure correctly the solar that is already connected to “C”. All my loads are connected to “C” as descripted in manual. I add also that Orion has bee…

Sorry I got side tracked, your are questioning the fundamental basis of Victron’s presentation of the data rather than there being an error in the DC tile which I was answering. In general Victron’s presentation is referred to the source in question. The solar tile is based on the MPPT as the sourc…

ok, I think I understand, so the dc loads will still show the loads not considering the solar wattage coming in? 73w in solora, 22 out from battery = 50W charging. seems legit if I understand. [image]

Sorry to reopen this thread but I need more clarification: This is the scenario in my RV: loads about 21w (lights, router, raspberry, cameras) if I connect the 230v the ip22 in victron connect app shows about output 15v, 11a in gui-v2 the battery shows 86w, DC loads -86w So where the 21w of DC …

The DC box is just a calc and any errors in any of the readings distorts the value, it is only approx. Measuring low currents will have larger % errors.

I try to me more precis: this is data for my IP22 15A taken from VictronConnect App: output 15v, 14.3A, battery 14,23V so the IP22 is producing about 215W. the ac charger tile is reporting correctly.but what about the battery tile? it report just 137W and dc loads is reporting 78W (137+78 = 215)…

finally I got it, system works perfectly. the missing 50W were going to the starter battery throught a parallelator (cbe csb3). thanks so much for the help

VRM and DC Power feature

DIY

pwfarnell 19 March 2025 09:27 2

If you do not have a SmartShunt on your DC loads set as an energy meter then the DC loads is only an estimate based on other info. See the DIY FAQ.

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VRM and DC Power feature

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