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Why isn't my DC power direct ?


I have a Quattro 10 000 connected to a Cerbo GX. My quattro is in manual mode, so i can decide if it is charging or discharging my battery. When i ask to charge 1000W, the input AC power follows the request but my DC power don't really follow it...

I don't understand why my DC power si so different from my AC power... Is it the result of the instability of the grid ? Because i'm conneced on a singlephase '' micro-grid '' which is generated by another inverter...


laurine-ferrando asked
Paul B answered ·

1 Answer

Will the Fuse LEDs on Lynx Distributor illuminate without the 4-pin cable supplied with unit?

Trying to use the Lynx Distributor (and Power In) without the Lynx Ion Shunt or BMS (using BYD batteries). I had assumed the Fuse LEDs would illuminate with a working fuse in place and powered, however a line on the old Victron Live page for DC Distribution Systems suggests that this small data cable is used to power the LEDs (rather than taking power from the busbar itself). I cannot get the LEDs to illuminate - are the LEDs useless unless using the Lynx Shunt? Because Lynx Shunt uses CANbus, it cannot be used in conjunction with BYD on a CCGX (though I think VGX would support it).

midsummerenergy asked
Mark edited ·

5 Answers

Cerbo GX Current Consumption

Hi, I am looking for current consumption of Cerbo GX @ 12VDC. For comparison, the Venus GX is listed at 210mA at 12VDC in the manual. Cerbo does not list any power consumption in the manual.

I would like to install on a boat mainly to link my MPPT via Wifi to the VRM website, but am concerned that the current consumption will drain batteries too much. I will be using 2x 50W panels, but would like them to primarily charge the batteries.

pyro asked
trulsla answered ·

6 Answers

Lynx Distributor Terminal Sizes

I can't find any specs on the Lynx Distributor terminal size. Can anyone help?

nate-costello asked
joao-lima commented ·

1 Answer

BMS12/200 in old vehicle do I need a DC-DC charger for the starter battery?

I`m building a Camper van on the basis of an 1991 4x4 Van.

90Ah LiFePo Battery

180Wp Solar

30A Alternator


No land power connection (fully autark setup with very low power consuption)

Is the set up as shown in the picture correct?

Is the power from the solar charger suited to charge the starter battery or do I need a DC-DC charger?

The BMS12/200 fully protects the LiFePo Battery from any harm as well as the starter battery from discharge, is that correct?

many thanks for your expertice!!


steve77 asked
steve77 edited ·

0 Answers


Am planning to install a 10kva system ac and dc coupled system the system which was designed by the installer had PV passing through two mppt 150/100 to battery bank. Quattro inverter CCGX

My question comes the installer advised that one can add an additional fronius inverter to the system after the designed has already factored the 1:1 rule as long as it’s rated smaller than the overall inverter charger. Meaning that there are two fronius e.g 10kva and 5kva on a quattro 10kva bus

hussein-khamis asked
alan edited ·

1 Answer

How to measure two DC Inputs On CCGX

I am looking to install a Victron system on my RV that will be using a third-party DC-DC charger to charge 48v house batteries from the vehicle's 12v alternator. If I were to connect this charger through a dedicated BMV battery monitor (with a second one for the system's DC loads), is there any way to have one show up as an "alternator" input on the CCGX display screen?

I know I could connect it through the BMV-700 and presumably just have the CCGX show it as power flowing from the "DC loads" box to the battery. My primary concern is ease-of-use for the end user, so I would greatly appreciate any way to configure thte CCGX for this display.

chase-martin asked
48v-on-56north commented ·

3 Answers

HowTo PV Charger priority over Quattro Charger

A non-ESS hybrid connected to the grid with Quattro mode "on" will throttle down the PV charger and charge the battery from grid...


when, by putting the Quattros into "inverter only" mode, the PV charger could actually deliver the charge. Or at least any charge so it would not be needed from grid:


Obviously, the question is how to achieve PV charger priority over Quattro charger priority, so one could leave the grid on, but not at the expense of PV chargers being turned down, which IMHO should have been the default in the limbic (non-assistant) system of Victron devices anyway.

petajoule asked
seb71 commented ·

2 Answers

Argofe 100-3 Connecting to Output Posts 2 and 3 leaving 1 empty.

Hi, planing to buy Argofet 100-3 for my boat. I only need 2 outputs currently, with the third one for use when i fit an electric windlass in future. Due to space constraints, it would be easier to wire up my banks to output 2 and 3, blanking off 1 for the time being. Is this okay or do i need to use 1 and 2?

Manny thanks


flea-taylor asked

0 Answers

24h MPPT data not syncing with VRM - why?

I have a small solar remote off grid setup with a Victron 75/15 MPPT. While sun is limited in winter I have a DC timer hooked up for disabling the load during most of the day. To track battery voltage and solar yield, I have Venus OS on a RPi installed. While the RPi also consumes load, it is not connected permanently (so it is placed after the timer). This is no option. It would drain the battery. Same for 4G router, and some small DC equipement. I noticed that when the setup is ‘on’ I can see stats on VRM but that seems to only show data from within the on-time frame. Via VictronConnect I can also connect to Venus OS and the MPPT and within the MPPT environment I can see all 24h data. Do you know why this is not synchronized with VRM?

Or is there an option to do so? Hope someone can help!

12 volt 20ah Lifepo4 battery - 60w panel - DC timer - VRM - RPi - Venus OS - 4G router

Tim asked
Tim answered ·

2 Answers

12V Marine system help


I will do my best to keep this short:

I have a 26ft. Sailboat on the Ossiachersee in Austria.

Because of weight, I want to switch from Lead Acid to Lithium. Because Lithium is so expensive, I want to switch from PWM to Victron MPPT for max battery protection (and max batt/solar efficiency.)

Unfortunately, due to different solar panel sizes, I can't have the PVs in series (see diagram).

Is my diagram here correct, or do I need less or more components?

Any info is greatly appreciated!




mpmattman asked
dazey77 commented ·

1 Answer

Help with switching simple 12v marine system from PWM to MPPT. Which compnents needed?

Hi Everyone,

I am new to the community.

I have a simple to moderate 12v solar system on my 26ft. sailboat. Because of weight, I want to switch from PWM and lead acid to MPPT and lithium. While money isn’t really and issue, I would still rather not have overkill with components that I might not need, so was looking for some advice as to the exact components that I need.

Current specs:

· 720ah wet batt. bank (lead acid)

· 40A 12v PWM controller (Steca Solarix 4040)

· 350W solar (all in parallel - different sizes because of the shape of the boat):

o 2x 16.7 V Max. (each) / 5.99 A Max. (each) (100Wp) ETFE Mono-Flex

o 3x 17.2 V Max. (each) / 2.92 A Max. (each) (50Wp) ETFE Mono-Flex

· All loads (except motor) connected with terminal bar and then to PWM load terminal (including 2 small 300w inverters for port and starboard), everything with on/off switches and fuses (max combined current @ 35 amps)

· External max 60A 12v trolling motor connected directly to battery, also with fuse and switch.

First of all, am I correct in assuming that I cannot connect different wattage (amperage) panels in series for an mppt system (as the lowest amperage would be taken), and would therefore have to keep everything in parallel?

After the research, this is what I envisioned (using all Victron parts, except for batteries):

· 4x 120ah lithium batts…total 480ah

· Victron smart controller mppt 100/30 (https://www.victronenergy.com/solar-charge-controllers/smartsolar-100-30-100-50)

· The above 350w solar panels in parallel. I know mppt would work better with higher voltages, but I am assuming if I put them in series, it would take the lowest amperage and therefore lose 50% efficiency?

· Cerbo GX ( https://www.victronenergy.com/panel-systems-remote-monitoring/cerbo-gx) I know this seems like overkill, but I need to be able to remoter monitor charge and temp, plus connect a few devices….

· All loads, including motor directly connected to batt through 100A battery protector (https://www.victronenergy.com/battery_protect/battery-protect) whereas the protector would be connected to the Cerbo (is that possible?)

· Mppt control display connected to cerbo?? (https://www.victronenergy.com/panel-systems-remote-monitoring/mppt-control)

· Temp sensor connected to cerbo? (https://www.victronenergy.com/accessories/temperature-sensor-qua-pmp-venus-gx)

The reason I want to switch to a Victron mppt system, is because the batteries are so expensive, that I want to ensure maximum life. So am I missing anything above, component wise? Should I be using a BMV instead of the mppt control display or a BMS in stead of/or in conjunction with the battery protector? Do I need a smart shunt, relay switch or any other components to make this system work efficiently and hassle free?

My goal is to get advice on the exact components to buy. Any and all advice or information is greatly appreciated!



mpmattman asked

0 Answers

Has DC System - Incorrect Consumption in VRM when Phoenix Inverter is run on DC

Hey everyone,

I am running an off-grid system with a GX Device and an MPPT, BMV and Phoenix Inverter 12/800. I also have DC loads connected to the system. As long as the inverter is not running, the consumption values in VRM are perfectly valid, but as the inverter runs, the values measured are off, as the inverter power is just added ON TOP of the DC Load Power which already includes all the current drawn by the inverter.

Is there a way to configure the GX Device to ignore the AC Power measurements, as they are already included in the DC Load? If not: it'd be great to have an option in the menu that states that the inverter is run on the DC system. Otherwise I am unable to reliably log the system consumption...



steffend asked
Wes Humpage commented ·

2 Answers

Which DC-DC charger 18A or 30A

Dear All,

I am new to all this and busy trying to design a simple electric diagram for my camper-van conversion.

I will only be using a 100Ah leisure battery and I was wondering if the DC-DC smart charger 12 / 12 18A would be enough.

I am assuming charging with the 18A would take twice as much time than with the 30A. Correct?
What would be a rough estimation of how much I could charge with say an hour of driving?

Many thanks for your support.

oliver-vt asked
oliver-vt edited ·

1 Answer

DC Power Where is it going?

Hi all

System is LiFePO4 12v battery (EVE 2p4s), REC BMS, CCGX, Multiplus (3000/12/230/50) and smartsolar 100/30.

Has DC System turned on and REC BMS (for Victron), CCGX, Multiplus and MPPT are all playing nicely.

Battery is at 70%, inverter is on but no AC load, MPPT output is 29A.

CCGX is displaying a 158w DC load. Removed all dc fuses to ensure that there was no load other than system control and idle Multiplus and DC load did not change. Turned Multiplus off via CCGX and no change to DC load.

Check REC BMS and only 14.22A to battery is displayed.

Where is the other approximately 13 amps going?






Bob Akers asked
Bob Akers answered ·

3 Answers

Venus OS, DC input and load=SOC

Hello, please help

In my small system I use a SmartSolar MPPT 75/15 that is connected to a battery. Two 90W solar panels charge system. Now in the cold part of the year I don't have an inverter connected to the system. I only use DC load on MPPT for lighting, internet and Raspbery PI. That way I have an accurate insight into charging and consumption so I can calculate the SOC batteries (of 55AH cca600W), but I would like to see that in VENUS. I don't have a BMW!

Is it possible to configure it in VenusOS? I am attaching screen of what the view of the console looks like now. thx in andvance


Marko asked
Marko answered ·

2 Answers

Orion Smart TR Isolated 12/12 30

Hello community,

I am currently building a van and planning on installing the Orion dc to dc charger to charge my lithium battery bank. I have a question about cable run length.

I believe the largest cable the unit can accept is 6 AWG. I have a long run at about 25 ft minimum. Will this size of cable manage well over that long of a cable run?

Thank you in advance!

leighsjor asked
mike-g answered ·

1 Answer

Connect a DC-DC converter to EasySolar / MultiPlus

I have an EasySolar 5000VA (=MultiPlus) connected to a 48V Lifepo4 battery. I was wondering, where or how I could connect a 48V to 24V DC-DC converter.

The DC-DC converter is supposed to power a Teltonika RUT950 4G router (9-36V) which is connected to the GX computer and gives me remote control over the EasySolar, even if its inverter (MultiPlus) is turned off.

I know, that there are several relay's from the MultiPlus and one is there at the SmartSolar charge controller. That relay can be configured when to be switched, but there was no Voltage when I measured, no matter what settings... However, is this the way to go? The router drains max 7W of power... should not be a problem I guess...?

Or could I hook the router directly to a relay without a DC-DC converter?

Or has anybody an idea, how I would power the router the right way?

Thank you!!!

andrer asked
andrer commented ·

0 Answers

DC current or energy measurement with Venus GX

In an upcoming project there will be a need to measure DC current up to about 90 A also from sources that are not controlled with Victron equipment and/or to loads. Does anyone know how to use a DC current sensor or DC energy meter with Venus GX/VRM? I would like the system owner to be able to monitor at least the DC current (A), but power (W) and/or energy (kWh) would be even better.

I have seen that some AC energy meters are supported by Victron (https://www.victronenergy.com/live/energy-meters:start), but I can presently not find any DC energy meter listed there.

Example of DC energy meter, which seems to be available e.g. with Modbus TCP communication: https://www.measurlogic.com/product/dts-dc/

Example of USB current sensor: https://calibike.com/product/calisense-usb-acdc-current-sensor/

Example of current transducer that I have good experience of from other applications: https://www.seneca.it/en/linee-di-prodotto/energia-e-misure-elettriche/trasformatori-di-corrente-serie-t201/t201dc/

Or could anyone consider to add such functionality to Venus OS, e.g. an an open source project (https://www.victronenergy.com/live/open_source:start)?

svenr asked
bathnm commented ·

1 Answer

DC Power no longer showing on GX Touch 50 Display

I am no longer seeing DC Loads on my Display ( Have the DC Loads setting to On) also the Battery icon is showing 0W just as the DC Power Icon 0W.... I am on a boat and definitely have DC Loads... Battery is at 100% and connected to shore power and Solar is producing as well. Any thoughts?

tony-castagno asked
markblox answered ·

2 Answers

Run DC load with Easysolar?

I have an Easysolar 48/4000/150-70 waiting to be installed, and will run a Lifepo4 battery pack with REC BMS that connects to CCGX with CAN. I've understood this will give SOC and charge/discharge instructions to the solar control and inverter to avoid over/under voltage. However, I'd also like to run a 4G router on 9–30 VDC (max 7 watts) without the inverter running with high idle consumption (25 watts) and not risk running the battery low.

1. Is there anyway to pass through 48V through the Easysolar / Multiplus?

2. The Multiplus programmable relay supports 4A up to 35V (1A to 60V) - could I run the router on that relay alone?

3. If not, I assume I can use the Multiplus programmable relay to control a 48v relay (e.g. Crydom ED06D5 with a control voltage range of 5-15 DC) based on SOC (with a 48 to 12 converter)?

bigvt asked
andrer answered ·

2 Answers

Should WFCO DC converter remain connected or be disabled?

I had a confusing call with WFCO about connecting my solar system into their panel. This is in a Keystone 30A trailer.

WFCO tech support says I want to keep the WFCO panel converter connected to my new setup. I assumed I would not. WFCO says if I disconnect their converter then even when connected to shore power the WFCO panel would draw DC power directly from the batteries. I had assumed that when on shore power the MultiPlus would output DC which is what would power the DC at the panel.

Who's right?

Also, WFCO says I do not need a circuit breaker at the AC output of the MultiPlus (see diagram) because he thinks the MultiPlus has it's own circuit breaker that will protect the AC romex feeding the panel. Others have said I do need a separate breaker.

Again, who's right? Thanks for any help / feedback.


texascharlie asked
Kevin Windrem commented ·

2 Answers

Orion TR Smart woes. Not impressed.


I have three different Victron DC systems and had plans to add the Orion TR Smart to two of them. I purchased a 12v 30a non-isolated Orion TR for my RV and to bluntly put it.. I'm not impressed.

This device has no ve.direct connector, what is the logic behind this decision? If I've invested the money to control every aspect of my Victron system through Venus, why would this device be headless? There also seems no way to add it into the bluetooth VE networking protocol.

I have come to rely heavily on DVCC for my dynamic charging needs, so the fact that this device can only be controlled through bluetooth with an extremely limited set of configuration options is frustrating.

The bluetooth radio in this device is abysmal. I can control every other Victron Smart product meters away from them, whereas this Orion TR doesn't even broadcast outside of the vehicle it's in. I have also seen similar complains in the ratings sections of a retailer and on this forum.

Has anyone used the external relay control features of their multiplus or possibly bmv-7xx to provide at least some type of logic-based control to their dc-dc charger?

I feel like this device was rushed to market. I am struggling to see the value in the Orion TR, I am considering returning this item. Does anyone have any insight if there are firmware improvements scheduled for this product or if I'm missing something here?

teejmiller asked
alnavasa answered ·

4 Answers

Phoenix Smart IP43 Charger and failure of the charge bus in a dual DC bus system.

I've got a Phoenix Smart IP43 Charger that I'm incorporating into a LiFePO4 24V system in a motorhome. The Phoenix will not be turned on permanently (only when shore power or generator is required). There is also solar charging (this is the primary charging source) occurring on the charging bus via an Electrodacus DSSR20. Both the Phoenix and the DSSR20 are remote controlled by the Electrodacus SBMS0 for overcharge situations.

I'm still doing the planning side of things and have been reading http://nordkyndesign.com/.

I have been following the outline for the dual DC bus system and was just reading through the section outlining a high-voltage event causing a charge bus disconnection.

In the article he says when some charging devices are disconnected under load there is potential for generating a voltage spike and subsequently damaging/destroying them.

The examples he gives are of ;PWM & MPPT charge controllers, wind generators, and alternators.


I was wondering if such a charge bus disconnection, say via a fuse break or a manual switch, would have an impact (like the device destroying voltage spike mentioned) on the Phoenix if it were activated at the time.

Also, would the outcome for the Phoenix differ depending if the DSSR20s (and solar modules) were connected at the time or not?

Thank you!

demosthien asked
demosthien edited ·

1 Answer

Launch of the Lynx DC Distribution documentation manual - Feedback needed

Hello Community,

I have just published the Lynx DC distribution manual


I would appreciate any feedback, suggestions for how it could be made better or clearer, or any questions you have that it doesn't answer.

Thanks, Guy

Guy Stewart (Victron Community Manager) asked
tony-c answered ·

4 Answers

Multiplus + GX-Device + Tesla Module -> is SimpBMS (currently) the best solution?

Hi guys.

I am planning on building a somewhat "portable" battery bank in a box.

DC side will be 2 Model S-Modules in series.

Current set of hardware at hand (to be expanded):

  • 2 Models S-Modules
  • Victron Multiplus II 48/3000
  • Cerbo GX

I am leaning towards SimpBMS, but would like to know if there are other suggestions, and systems which will communicate with Victron (trough GX device)?

Any other suggestions on (DC) specific hardware?

Currently I am relatively open, but would like to avoid shunts/Relays wherever possible, to limit standby-power, so leaning towards a DC breaker (with a trip coil). Experiences/suggestions/further thoughts?

basti asked

0 Answers

Weird consumption spike

What could be the reason for weird consumption spikes? My normal daily consumption is something like 0,15kwh and couple times I have seen almost 10kwh consumption. All that comes in short period and ofcourse I don't have any loads on that time (nothing I can think about) SOC don’t drop in that time. This has to be some wrong calculate but it spoil my graphics because my normal consumption dosen’t show in same picture (0,15 vs 10kwh). It has come now twice. Yesterday and maybe one 1-2 month ago.

easysolar 1600 with bmv-702 and 1000+ah batterys.

Jere Mäkelä asked

0 Answers

Air conditioner with DC 36V input


For an air conditioner application with a 36V DC input (more precisely 30V<input<40V) I want to use batteries to power it.

Which Victron E product could either:

-charge a 36V battery bank, or

-convert 12V/24V dc to 36V dc



carloa asked
carloa commented ·

1 Answer

Lynx Distributor Usages Clarifications

Hi All, my first time with Victron products and Solar Energy. Questions about Lynx Distributor. Considering that has 4 slots fused.

1) May I connect the whole system in One Lynx Distributor Unit?.
Slot 1: Multiplus-II 48/3000 (Fused)
Slot 2: SmartSolar MPPT 250/100 (Fused)
Slot 3: Lithium 48V Pylontech US3000 (Fused) (3 parallel modules connected with cable kit 120A/2000mm lenght)
Slot 4: Venus GX (Unfused as brings its own in-line Fuse)

2) Fuses sizing should be MEGA 125A for all 3 Slots? (i.e. Littlefuse MEGA 125A/58V for 48V)

3) Is there a minimum lenght for Cables of Slot 1 and Slot 2, I have available AWG2 35mm2 nominal cable (33,6mm2 actual section). For Slot 3 cable kit size came Pre-Fabricated.

Please if you see any safety issue advice, this is an Off-Grid system. 3000W Panels Array (4series x 2 strings). (SmarSolar is oversized for future expansion duplicating whole system)

Thank you,


sanchuka asked
maxxpwr answered ·

2 Answers

Orion DC DC Charger - when will it be networkable?

Hi All, I have a camper that runs solar on the roof, and via a Smart DC DC Orion 24/24 - 17 charger in my truck camper. Currently these are not networked as I am driving along which does cause them to sometimes be in different charging states.

Posts on here have asked the question but have not been updated recently - when will the Orion DC DC chargers join the Victron Networked family?

I am very keen to have all devices working on the same charging algorithm. Is there a workaround with the Victron Dongle?

Does anyone know when these will be networkable?



trollan asked

0 Answers


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