question

islander1717 avatar image

Quattro 48/10000/140 excessive idle power consumption


My Victron 48/10000 consumes more than 115-130W while in an idle mode (drains nearly 2.4A), is something wrong with the settings or is it faulty unit?

This is a newly installed off-grid system, that is not connected to house AC circuits yet, so zero AC load. The Victron data sheet says the consumption should be 60W, so it seems that my unit consumes twice as much, literally wasting ~2.8kWh daily just for its own operation.

Please tell me it's not normal? I just find it a bit far too excessive, and very frustrating, considering that I won't use more than 7-8kWh per day for all other appliances combined.. What is the point then of searching for and buying energy efficient fridges/freezers and other appliances if Victron itself consumes more than them all combined?

Anyone else has similar issue? Has it been resolved by your dealer/installer or Victron themselves?

MultiPlus Quattro Inverter Charger
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4 Answers
ogrt avatar image
ogrt answered ·

I have exactly the same issue, it can take 10% off my LVL 15.4 overnight. With quattro off Cerbo GX says power consumption is about 10W, that goes up to near 130W with the inverter on and the main circuit breaker disconnected so no power draw. It all stacks up with battery power and is not a reading error. The AES mode takes voltage down and reduces is to nearer 70W, sstil too high according to the spec. With Search mode it's much better but the hum of the unit kicking in and out every few seconds is not not ideal and I wonder if it limits the life of the unit. I'm on firmware 475. I'm not impressed and perhaps have been mis-sold. I should have gone for parallel 5k units and kept one turned off when not needed! I wondered if to but a low power inverter for overnight use, and wire the house to have a low power circuit to run fridges and routers. :(

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Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @Islander1717

How do you measure the consumption? do you have a battery monitor installed?

if it is really 2.4A that is indeed excessive, but it might be that this is just an inaccurate reading.

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Thank you Daniël for the response.

As per my response to Jwfrary below, I read this numbers from Victron Colour Control Monitor, that is essentially connected via data cable to 15.4kW BYD BatteryBox LiFePo4, so I suspect it's a direct reading from battery's management system.. Please also see the photo I attached in my previous post

The accuracy maybe not 100%, but should be pretty close, because in the last 15 hours (from 5pm yesterday to 8am today, with no AC load and no PV input, it's a shortest day of the year here in Australia today), my 15.4kWh battery got drained by 11%, which equals 1700Wh, or 113W per hour.

Sorry I'm kind of newbie in all this, The system was installed by local company (happy with everything, really great customer service), so I'll be in touch with them later today, but before doing that I was wondering if maybe I am missing something, or some settings are incorrect or maybe it's normal (shouldn't be!)



Hi @Islander1717

The Battery is not capable of measuring small currents accurately, so you'll need a good clamp meter (or a shunt) to accurately measure the real consumption.

islander1717 avatar image islander1717 Daniël Boekel (Victron Energy Staff) ♦♦ ·

Thank you Daniël,

My local off-grid solar installer/electrician should come soon to finish the installation and I will mention my observations to him and ask him to do precise measurements at battery terminals.

Will report the outcome here! But so far I remain sceptical...


P.S. in the meantime, I've been researching and found another case like mine

https://community.victronenergy.com/questions/6893/no-load-idle-consumption-victron-quattro-481000014.html

https://www.photovoltaikforum.com/thread/110307-eigenverbrauch-victron-in-nulllast/?pageNo=2

https://powerforum.co.za/topic/2563-victron-solutions/?do=findComment&comment=41691


Unfortunately, in those cases the issue hasn't been resolved and the conclusion/outcome was that some Quattros consume almost twice as much as claimed in a their data sheet... Which makes me even more sceptical, but I'll wait to see what my installer/technician says.



jwfrary avatar image
jwfrary answered ·

Have you tried using the AES (Automatic Economy Switch) function? That will save a reasonable amount.

Equally have you zeroed the shunt if you are using one?

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Thanks Jwfrary,

No, I haven't tried AES yet. Will try today, just to see if there is any significant difference. However I believe that long term (when I'll have house AC circuits connected) this mode won't be practical for me at all anyway. Also I have suspicion (also will check it later today), that if I connect any AC load, the Victron inverter will add same 120W to the existing consumption. In other words, I suspect it consumes 120W always, regardless idle or AC load.. Again, will test it today.

Answering your second question, no, I don't have shunt as such. I have BYD LiFePo4 battery, so the reading comes directly from the batterry via Ethernet to the Victron Colour Control Monitor I believe. Maybe these numbers are not precise, but I don't see how measurement error of 50% is possible at all anyway. Besides my 15.4kWh BYD battery bank gets discharged by approx 10% overnight (With zero AC loads), which equals roughly into same 120Wh per hour.


islander1717 avatar image
islander1717 answered ·

Here is a pic that I took right after sunset (PV system produces zero)


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