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dc system

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
sharpidea commented ·

3 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
Paul B answered ·

1 Answer

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

Lynx Distributor Terminal Sizes

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

nate-costello asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

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

Isolated DC-DC in series and Buck-Boost Settings


After reading all the documentation and contacting various distributors I have conflicting data regarding two Victron products.

Question 1 regarding the Buck-Boost DC-DC Converter 25A / 50A / 100A:

Can you change the output voltage (via USB) while the converter is delivering power or will the output shortly disconnect to apply the settings?

Use case: I need to change the voltage +/- 2/3v while the connected equipment is running.

Got different answers - if maybe someone has it on the table a quick test would provide the definitive answer. The output should be under load.

Question 2 regarding the Orion-Tr DC-DC Converters Isolated:

Some of the equipment is running on 36v. Because there is no step up converter with an output between 30 and 40v one option is to use three isolated DC-DC converters IN SERIES to provide the needed 36. In theory, being isolated, it should work.

Has anyone used a similar setup or has more information if it's the right thing to do?

There is no other option (from what I have found) to have a 36v output.

Appreciate the time, willing to help research anything if it solves the problems.


drsnap asked
Vance Mitchell answered ·

1 Answer

multiplus 24/3000/70 dip switches not working


Have a 24/ 3000/ 70 here, which don,t respond on the dipswitch settings, so after making a setting the up and down button, don,t give any response.

If i look on the mother board front and backsite, looks horrible with all those mods.. ( first experimental victron ? )

I like to lower the output to 230.volt, after changing the burnt toroidal transformers the output is on the high site.

Also like to lower the charge output..

Any ideas welcome

vanders asked
Justin Cook - Bay Marine Supply USA answered ·

3 Answers

Off-grid Victron Solution coupled with a Victron solar DC chargers and AC Wind turbine

Hello Everyone,

I'm designing for a client a completely remote solution/off-grid system with Victron technologies.

I'm feeding an average of 5kW AC load 24/7, 365 days a year, so I'm targeting both solar and wind to reduce my battery bank capacity since both sources are feasible to introduce in the project's area.

Accordingly, a battery bank with a Victron Quattro 8KVA DC coupled with several Victron smartsolar charge controllers in parallel and AC coupled at the AC output (load side) with two or one wind turbines having a total capacity of 6~7 kW max.

Can anyone help identify the best wind turbine system to couple them with this system? having an inverter that de-rates when the batteries are full (frequency controlled by the Quattro) and that operates efficiently at low wind speeds?

thank you in advance,

georges asked
georges commented ·

2 Answers

AC and DC coupling - Co ordination

I just watched the webinar for Victron/Fronius Micro grids.

I want to understand what happens when the Fronius inverter is ramped down through the frequency control.

There are two parts to this question which are closely related.

First question is simple.

Can a common PV array feed both the string inverter and the Victron solar charge controller? So they would be connected in parallel and share a common dc energy source.


Let's say the house is only using 200 watts. Let's also assume we are using a 3KW fronius string inverter. The PV array is producing 4KW and the battery is 50% SOC.

Once the fronius inverter ramps lowers its output through frequency control can the solar charge controllers demand more of the PV energy and send that energy to the batteries?

project-eco asked
jbakuwel edited ·

4 Answers

Using the ColorControl GX in a DC-only system and UI display

I have no experience with the CCGX and would appreciate comments on this configuration.

Looking at documents on the www, it seems that the CCGX UI main display has one predetermined way of displaying the system (maybe depending on what VE.BUS device is connected) The upper part shows the AC input / output and the lower part shows the DC input / output , battery and charging/discharging plus PV inputs.
I have a non-Victron battery charger and a nonVictron inverter, which I can not connect to the CCGX. Still I want to use the CCGX to collect infos on the generated 24V (300W water turbine) and the 24V power consumed by the nonVictron 230V inverter, using 2 BMV700 with their corresponding shunts. A BMV703 will be used to monitor the battery (SOC). Also three Solar MPPTs will be connected to the CCGX. The idea is to have a central information display for the relevant parts of the system (24V) and to use the CCGX with a GSM module to connect to the Victron portal (VRM). I will use the three VE.direct sockets on the CCGX for the three BMVs. For the Solar MPPTs I will use VE.direct to USB converter cables and connect all three, through a (powered) switch to the USB socket on the CCGX. I am somewhat confused on what exactly will I be able to display on the CCGX screens. The most important question that I have, is whether I will be able to see the relevant data for all attached VE.direct devices individually, in any available menus on the CCGX (and VRM)? Is the data for the 3 Solar MPPTs shown individualy, or consolidated to a single value?Thanks.

ciki asked
wildebus answered ·

3 Answers

What happens to onboard 12v accessories when I replace charger/converter with multiplus?

I'm about to replace my onboard charger/converter (12v) with a Multiplus 12/3000/120. I will be disconnecting the charger/converter and wiring the multiplus into the breaker panel 120v circuits.

Since the 12v converter will be disconnected as it's an all-in-one Parallax 7345 unit I assume I will loose the ability to operate all my motorhome 12v accessories that we connected to the DC circuit branch of the breaker panel.

Is my assumption sound? If so what have others done to get the 12v line operational? I'm thinking the 12v lights, radio, etc.

rob-mitchell asked
sglad answered ·

5 Answers

Integrate a 2000W 48V DC wind turbine into the Victron system

Hello ,

I would like to integrate a 2000W 48V DC wind turbine into the Victron system and display it in the remote console.

The wind turbine has its own controller, my only concern is to record the power equivalent to the solar panels.

I already have a 1000A Smartshunt with VE.direct to measure the current, but I want the yield to be shown exactly as in a DC solar system and integrated into a GX in the total cost-effectiveness.

As an an example :

Solar 1: 2.55 kWh

Solar 2: 3.33 kWh

Wind turbine: 1.2kWh

Total energy 7.08 kWh in 24 hours

Would this firmware update be possible?

So set the SmartShunt not as a battery monitor but as a "DC generator".

Then create the name in the GX (wind turbine, water turbine, DC generator, etc.)

If someone has an idea or the developers could implement it, I would be very happy.



oekosven asked
Daniël Boekel (Victron Energy Staff) commented ·

4 Answers


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