AC coupled Quattro + Fronius (microgrid) + Huawei inverter

Hi folks,

I have a quattro + fronius microgrid that's not working very well (tried on output of quattro, tried on input... it's limiting the hell out of fronius output), so i'm currently using the fronius smart meter to limit injection to grid (undesirable as I pay for export).

But next week, I will install another 3Kw system with Huawei inverter (this will also be grid-tied and approved by the power co. for export).

Below is the diagram that I though on using. Basically just inserting the 3Kw Huawei inverter between the grid and the smart meter.

After this new installation, I can inject a bit more to grid from the fronius, or victron, as long as anti-islanding is obtained.

PS - my victron is acting up under heavy loads ( i need to warranty is someday...) from battery, so I am forced to user the EV charger directly form Grid or whenever I do have solar enough to discharge from battery less than 2-3kwh, hence the location.


iromeo asked

0 Answers

I need a schematic for a 3 pole switch with a Cyrix-ct 120A and 2 batteries powered from an outboard


The image above is how Blue Sea would have the connections Without the Cyrix-ct connected.

Here is a 4 pole setup, but I need a schema for a 3 pole where the #2 Pole originally had the output to the fuse box and busbar. There is a Pole #1 and a middle pole of {#1 & #2}combined. I have the Cyrix connected between the positive terminals of the starter and house batteries. Thanks all.


hapibeli asked
Paul B edited ·

1 Answer

Discrepancy between Grid Setpoint shown in VenusOS and the actual power drawn from the grid (and some other problems in using ESS)

I am new to Victron products and have started setting up a 48V LiFeP04 battery system with a MultiPlus II 48/5000/70-50. In phase 1, my target now is to store electricity from the grid to the battery pack during low rate period at night and then use the stored electricity during day time. I am planning to add a PV system in phase 2 after I have got familiar with the Victron products.

Below is the diagram of my setup:



In VEConfig, I have the following settings:

TAB: General

System frequency 50Hz

Shore current 100.0 A

Overruled by remote unchecked

Dynamic current limiter unchecked

External current sensor connected (see manual) checked

State of charge when Bulk finished 90.0 %

Battery capacity 277 Ah

Charge efficiency 0.95

TAB: Grid

Country / grid code standard UK: G98/1 March 2019, G99/1 May 2018

LOM detection AC input 1 Type B (grid code compliant)

start P(f) at 50.40 Hz

start delay for p(F) 0.08 s

Droop for p(F) 10.0 %

Use Aux1 (if available) as disable FeedIn signal checked

Reactive power regulation Use a fixed Cos Phi

Filter time for reactive power 3.3 s

Cos phi at point 1 1.00

TAB: Inverter

PowerAssist unchecked

Inverter output voltage 230 V

Inverter DC shut-down voltage 48.00 V

Inverter DC restart voltage 50.00 V

Low DC alarm level 49.00 V

Do not restart after short-circuit (VDE 2510-2 safety) unchecked

enable AES unchecked

TAB: Charger

Enable charger checked

Weak AC input unchecked

Stop after excessive bulk checked

Lithium batteries checked

Configured for VE.Bus BMS unchecked

Charge curve Fixed

Absorption voltage 55.00 V

Float voltage 52.00 V

Charge current 70 A

Repeated absorption time 1.00 Hr

Repeated absorption interval 7.00 Days

Absorption time 1 Hr

TAB: Virtual switch

TAB: Usage

Virtual switch usage Do not use VS

TAB: Assistants

TAB: Assistant Configuration

ESS (Energy Storage System) (size:962)

*) System uses LiFePo4 with other type BMS

(This can be either a BMS connected via CAN bus or a BMS system in which the

batteries are protected from high/low cell voltages by external equipment.)

*) The battery capacity of the system is 277 Ah.

*) Sustain voltage 49.00 V.

*) Cut off voltage for a discharge current of:

0.005 C= 48.00 V

0.25 C= 48.00 V

0.7 C= 48.00 V

2 C= 48.00 V

*) Inverting is allowed again when voltage rises 2.00 V above cut-off(0).

*) Relevant VEConfigure settings:

- Battery capacity 277 Ah.

- PowerAssist unchecked

- Lithium batteries checked

- Dynamic current limiter unchecked

- Storage mode unchecked

In VenusOS - ESS, I have the following settings:



From the VenusOS screen shown below, it seems that the ESS system was working properly as per my expectation that:

  1. Discharge the battery to supply the loads of the house
  2. The grid setpoint was kept at around 50W


However, I have the following queries (or encountered some problems):

  1. While the VenusOS screen showed that the grid setpoint was kept at around 50W, a clamp ammeter at the CT point location showed that the grid was supplying 2.3A (i.e. around 520W) to the house at the same moment. That was 10 times larger than the grid setpoint. When the house asked for more load, the grid setpoint in the VenusOS screen still showed 50W and the clamp ammeter also showed around 2.3A. It seems that ESS thought that it was keeping the grid setpoint at 50W but in fact the power supplied from the grid was much more than that. What was causing such discrepancy? (Note: The chance of a faulty CT is low because I tried 2 CTs. Both had the same result.)
  2. Before the turning on of the MP-II, the clamp ammeter showed that the house was drawing 2.7A from the grid. After the MP-II was turned on, ESS then worked as shown in the above VenusOS screen. In that screen, you can see that the battery was giving 424W. The grid was giving (from the clamp ammeter) 2.3A or 529W at the same moment and therefore the total was 424 + 529 = 952W. However, before the turning on of the MP-II, the house was only using 2.7A or 621W. There was a more than 300W differences. Did it mean that the MP-II was itself eating up 300W? Or, such confusing figures were also caused by the cause of problem 1 above?
  3. In the VenusOS screen, only one “AC Load” was shown. I got that the "AC Load" shown also included the load connected to AC-Out1 (i.e. the critical load). Is it possible to show the load at AC-Out1 in a separated box? If yes, how?

Thank you very much in advance for any help/advice.

elel asked
Paul B edited ·

1 Answer

SoC jumped to 100% while the battery was being discharged

I have the following simple setup with ESS Assistant in which I charge the battery from the grid during low rate period at night and then use the battery for the house loads during day time.


I encountered a problem in which the SoC shown in the VenusOs screen jumped from 69% (Main On+Absorption LED “ON”, Inverter On LED “Blink”):


suddenly to SoC 100% (Main On+float LED “ON”, Inverter On LED blink):


while the battery was being discharged!

The battery pack has its own BMS and the BMS has no connection to the MP-II.

I set the "State of charge when Bulk finished " to 90% in VEConfig and it worked properly.

I set the "Minimum SoC (unless grid fails)" in ESS to 10% and it worked properly.

The “Float Voltage” set in VEConfig was 52V. The above problem occurred at 53.2V .

Any advice on:

Why the Float LED suddenly lighted up?

Why the SoC suddenly jumped to 100%?

elel asked
Paul B answered ·

1 Answer

while multi II 2x120 is on shore power, ac power is coming in and passing through plus charging batteries, but an error of ac input not available on the screen and no ac is showing.

Multiplus II 2x120 with cerbo gx plus 50, not seeing ac input on screen with error of no ac input available. ac is connected and passing through system.

sjwysong asked
Paul B commented ·

0 Answers

14 point Venus GX Phoenix Connector

I’ve lost the original green connectors for my Venus GX. I’m interested in adding temperature probes. I’ve found a place to buy it but there are 3 distinct sizes they come in. 3.5, 3.81, or 5.08mm.

Can someone tell me which one will fit the Venus GX?


jasonandress asked
Paul B answered ·

1 Answer

MPPT 75/10 load output is physically always on, cannot be shut off


we use an MPPT 75/10 SmartSolar in one of our projects for charging a battery through pv and powering our system through the load output. Recently the load output is not behaving the way it is configured through the app via bluetooth. Regardless of what is configured the load output is always "on", meaning there is always the battery voltage on the output and any connected loads are always powered. Effectively, the MPPT does not physically shut off the load output.

We do not have a jumper connected nor do we use the street light functionality.

All software functionality seems to work fine. If we set the loading alrogithm to "always on" or "always off", it is shown correctly in the overview view. If the load is "on", the software measures the current correctly. If "off", the software does not measure the load current anymore although the physical load output is still switched on.

The firmware is the most current version and resetting to factory defaults didn't help.

How can the load output be fixed?

Can our system be a problem here which could have damaged the MPPT controller? The load we have connected are two DC/DC converts (for 24V and 5V) where we have a 50W pump and some 10W valves running on 24V and an automation controller (2W) on the 5V output. All in all it shouldn't be too much and inrush current spikes seem to be very unlikely (the pump has a controller which starts it very slowely).

Any help appreciated!

kaans asked
Paul B answered ·

1 Answer

inverter mppt Master and salve config

Hello ,

I am new user of victron and I know that we can connect 2 inverter together to the same AC .

My question is bit more complicated than that .


The Australians law said we can connect the mppt inverter to the grid it's forbidden except if we ask the fournissor and let an electricians to do it .I don't want that .

My ideas is simple to respect the law and be connected to the grid ,I got an ideas I saw some power supply 240v to 400V 50A .

One mppt inverter will have a power supply 240V to 400V 50A connected to the solar panel inputs off course no solar panels will be connected on this inverter and the inverter will not see the difference .

Second mppt inverter will be connected to the solar panels 5KW .

both will be connected in parrallel to have 240V in the house .

1) if my house use 2KW ,I want to get this power from the second MPPT inverter and turn on the first MPPT inverter to not use any electricy from the grid .

2)in case that the solar panel produce 5KW and my house is using 8k the first MPPT can come to help and produce 3k on the top of that ?

Please tell me which MPPT inverter can do .
Thank you

jcf asked
Paul B edited ·

1 Answer

Bluetooth not connecting after Firmware / App update.


I hope you may help me with an issue/s that I am having with a Smart Solar 75/15 with in-built blue tooth. I purchased this a little over three years ago for a camping setup and it has had limited use due to COVID (no more than 6-8 uses). Up to this point I have had nothing but praise for this unit as it hasn’t missed a beat, so much so a couple of friends have bought this controller on my recommendations. This week I went camping and as I connected to the VictronConnect App, I was presented with a message to update the firmware. I did this and it installed as expected.

From there I was presented with numerous Error 21 messages. This is an error with current and I was asked to disconnect all leads and reconnect. This did not solve this issue. I then proceeded to update the app. Since then, I have been unable to connect via Bluetooth. Mostly it gets to 20%, sometimes 60%, sometimes to 80% and very occasionally to the point of putting in the passcode. Each time it doesn’t connect and requests that I remove the Bluetooth connection from the phone which I have already done.

I have followed the trouble shooting guide which has included, reinstalling app, turning off phone, resetting the PIN (via PUK which doesn’t work as it won’t get through the connect phase before indicating to remove the pairing even though it already has been removed).

I have also tried some other potential solutions as found online which includes ensuring no other Bluetooth devices are in proximity, connect the battery to the controller first and then try and connect before connecting the solar etc…

The issue continues and I am out of ideas. Other information of note is in-regards to the lights on the controller. The blue light flashes about every 3-4 seconds. After a period of time both the blue and yellow lights flash in unison quite quickly which indicates and “Internal Error”.

Is there any solutions that I have missed.

Thanks in anticipation. Cheers Rod

yaapeet30 asked
yaapeet30 commented ·

1 Answer

New Dual Multiplus Inverters RV Setup - 50AMP

Hello Smart folks,

Hoping I can get some thoughts/assistance if anyone wouldn't mind verifying what I am thinking isn't nutty...? I am only showing the AC side diagram I created as that is where most of my questions come into play.

Currently I have a stock RV 2021 Forest River GT7 36K7. I have purchased a dozen solar panels a Victron 150/100 charge controller and a single 3000 Multiplus. I want to be able to run everything (should I chose to go this route) as I would today off of the battery power even if it is just for a short time. I have 6 105ah Lion Energy ut1300's which I know wouldn't run all of this for very long, but want the flexibility to be able to if I wanted for even an hour.... My question is based on the below drawing, will this accomplish the goal of that?

What I want to be able to do:

1.) On 50 amp shore power run everything as I can today.

2.) On 30 amp or less shore power run everything from the AC panels with the shore power and the power assist kicking in for the additional required power.

3.) If I so choose try to run anything (or everything) off of battery only power (even if it is only for a short period).

4.) The Victron Cerbo Touch Screen Energy Control GX System w/Color Display that I ordered to be able to monitor my single 150/100-tr Victron charge controller, and my two multiplus inverters, along with my lynx distributer (future I heard it can send info back to the gx, but not current).

In the setup below if the above 4 are covered, is that considered parallel or split phase? I am not an electrician (obviously lol) but I am reading and trying to comprehend as much as possible, I get hung up on things I don't fully understand in some of the other threads on similar topics such as setting these up in parallel vs split phase ect. Since I don't fully understand the terminology and what each fully mean, I have a hard time telling if the below is true split phase or actually what this would be considered?

In the thread here there are 3 options presented. Which I admit I don't fully understand and maybe I should present my questions on that thread for that side, but didn't want to hijack his thread and it is a year or so old, so not sure how much it is being followed. Does the below diagram fall into this category [3}?

[3] You can run them in a split-phase pair. There are two advantages of this approach compared to stacking. First, your two units are wired to each phase when on a 240V supply, so you have access to the full 12kW at the pole, subject to the internal limits of your MultiPluses. (They won't be able to charge that much, for example.) Second, if you have a single phase supply (120V 30A, 20A, 15A), you can feed it to one side and the other side will reject incoming and stay in inverter mode. You will have seamless load support on both legs, but you will be going through the battery for the second leg. A consequence of this setup is that if you have a large 120V generator, you may not be able to fully utilize it, because it can only feed one of your two units.

Finally, the above bold/underlined statement makes me feel I would not be setting this up with option 3 via the below diagram? Mainly because I see my diagram below representing these operating as individual units each controlling a phase (or leg) of the load and then the phases remaining separated as individual legs, and I assume the AC panel in my drawing keeps each phase individual (ie one 50 amp leg operates 1 side of the panel, the other operates the other side of the panel).

Please be kind, I am not masquerading as if I know this stuff I am only trying to learn and apply what I have learned to my situation. I am a DIYer and don't want to higher someone because I find this stuff really fun, but I also don't want to do something terribly wrong... The hand drawn diagram (that says CURRENT in left column) is how the current RV is wired from the factory (other than the batteries which I replaced the stock ones day one).

Please let me know if there is a better way to accomplish this, I also have drawn up a diagram to try to do this same thing with a "Smart Phase Selector" and a single inverter (since I only have an order in for 1 right now). But then the wife sprung on me "I want to be able to run other things besides what is on the small subpanel from battery if your going to be spending this type of money". So I will ultimately either do what I have suggested below (if you guys agree it will work and fulfill the needs.

My options as I see them now:

1.) The diagram in color (pending your review as to if that will work, and covers my needs) Most expensive as it requires me to buy another inverter. Or any recommendations you guys give me to adjust this setup.

2.) The hand diagram below that says "Smart Phase Selector" in left column which is the second most expensive, and you can't find the "Smart Phase Selector" anywhere in stock. More info on this item:

3.) The third and least expensive option is to use one of these This is the drawing that is had drawn with Future #2 on the left side. The Pin out wiring is on the same drawing with the circle numbers for the switch representing each position and how I think I would have to wire it to make it work. Position 1 of the switch for 50 amp Shore Power. Position 2 for all other single phase connection or Inverter for entire RV. I would use position 2 when connected To 15 amp 20 amp or 30 amp.

Do I gain much on via option 1 to option 3 for the price difference? ect.

Thank you all in advance, and if you made it this far, I hope to hear back :)





cory cantrell asked
bostonfamily1181 answered ·

1 Answer

The right mppt choice

Hello all,

I am facing a cost/benefit decision. I am looking for the right mppt for my 350wp solar system. I have no experience with solar systems.

The solar system consists of 2x 175wp:


Vmpp: 37,16V

Impp: 4,71A

Voc: 44,28V

Isc: 5,21A

The Victron rating calculator suggests me the SmartSolar 100/20.

However, I am unsure if this may be too small for my system. According to the data sheet, this is designed only up to 290W.

Alternatively, I have looked at the 100/30. This would of course cover the power, but possibly somewhat oversized.

The solar panels are ultimately mounted statically at a horizontal angle. Is it realistic that the solar panel produces more than 290w in this scenario? I assume that I would " fully utilize " the 100/20 in a few szenarin and therefore the 100/30 would offer very little added value.

I would be very happy to here some experience values. For which MPPT would you recommend?

Thanks for your help and time!

ago007vovfd asked
Sarah answered ·

2 Answers

VRM Login problems

I cannot login to vrm portal

I have an account which worked successfully for over a year...and also on the app on my phone

I wanted to change some settings so attempted to login to the vrm portal however i couldn't remember my password

I though a simple password reset would fix this however no mater how many times i go through the process of getting the email and setting a new password i am now unable to login either through chrome or my iphone app

tas6 asked
Guy Stewart (Victron Community Manager) commented ·

2 Answers

Using Battery Protect with Inverter (as a load). Victron SmallBMS manual says ok but is it?

Hi, I've been reading up on Inverters and how to install them in my system. I'm looking to add a 1,000-1,500 watt pure sine inverter to my system (not an inverter/charger).

I thought I understood that a BP was not appropriate for this because it would be damaged by the inrush/inductive surge that occurs when due to the inverter's capacitors (sorry if I have the terms wrong, but I get the idea).

However in reading the current Victron manual for the SmallBMS (just downloaded this manual today from the Victron Energy site), I see this paragraph (Safety Instructions, section 3.4):


I'm sorry if that came out tiny. The Section 3.4 heading is this:

3.4 DC Load: Disconnecting the load with a BatteryProtect

The part I have outlined in red says this:

"Contrary to a Cyrix or contactor, a BatteryProtect can start a load with a large input capacitor such as an inverter or a DC-DC converter."

So that makes it sound like it is fine to use a BP between the battery (and BMS) and the inverter (load). But I thought I understood that that was verboten and would damage the BP? If I'm understanding the manual correctly though, I can use a BP (as a load disconnect/protect) between my main busbar and the inverter (controlled by SmallBMS). Can someone confirm that? Or fill in any misunderstanding on my part?



System components (appropriate fusing not mentioned):

Victron Smart 12.8 200ah battery

SmallBMS (or could change to VE.Bus BMS)

BP100 before existing house loads

BP100 (backwards) from charging side (Victron SCC 75/15)

Orion TrSmart DC-DC 12v/12v charger from Start battery (controlled from BMS).

Victron BMV-702/shunt on negative side

coaster asked
coaster commented ·

2 Answers

VE BUS SMART DONGLE voltage connected to MULTIPLUS does not match VE BUS input voltage



My VE BUS SMART DONGLE that is connected to my MULTIPLUS reads incorrect voltage, it is 0.59v higher than the input wires at the VE BUS. It is causing my MULTIPLUS not to charge when battery voltage is low. See pictures.

mdgreene2001 asked
solar-mann answered ·

2 Answers

Will the trickle charge disable when main charge is disabled?

I plan to control my multiplus 12/3000 charging via a BMV 712. So charging of my Lithium stops when reaching wanted voltage. Will this chat down the trickle charging to? I cannot find any information on this.

hakanlarsson65 asked
luphi edited ·

6 Answers

Will the AC-in of the multiplus transfer straight to the AC out in the event of a total failure of the inverter/charger?

Will the AC in of the multiplus transfer straight to the AC out in the event of a total failure of the inverter/charger.

I know the transfer switch is normally open and the multiplus performs some voltage and frequency tests before closing the transfer switch and allowing power through.

I also tested and know this will happen when there is no battery power to the multiplus. There was still a delay in the transfer switch operating which suggests it still performs tests even without the battery input.

I would like to know whether it is a good idea to install a manual bypass switch in case of a total inverter failure so the loads can still be supplied directly from the generator.

theswitch asked
piraya answered ·

6 Answers

MPPT is giving lower amps than other


I've 2 MPPT controllers, one with 8 solar panels and one with 12.

Problem: The one with 8 panels is giving a way higher amperage than the one with the 12 panels.

Both MPPTs are in the BULK stage. I would assume I've connected them wrong but the voltage seems accurate. The panels are all installed next to each other, no shadows.

Any idea what could go wrong?





walter-widmore asked
snoobler commented ·

3 Answers

Linux alternatives for setup

My supplier has sent me links to the Windows-compatible utilities
VictronConnectInstaller.exe and VECSetup_B.exe

Which are no use to me, running Linux Mint 20.

I have tried the Linux VictronConnect-x86_64-v5.52.AppImage, which gets stuck doing nothing. Can anyone help with the Linux alternative to the two above, please?

Am I wrong to expect it to connect through the Internet connection?

Thank you.

perastro asked
perastro answered ·

3 Answers

Lynx BMS - GX Not going into float ( kinda)

Hello ,

My set up , i have just finished my install and have run into a few bugs/ settings i cant figure out . I

3 x 200 li smart

Lynx smart BMS,

multiplus 5 kw

several lynx distro's and smart battery protects.

Firmware on all devices is currentI have read all the manuals both the GX and Lynx bms. DVCC is forced on .

The BMS is working well, I was super impressed it balanced the batteries on the first charge. when you start charging the GX displays as it should , bulk then goes to Absorbtion at the correct voltages. What is weird is that it will go to a float voltage of 27.2 and float but not indicated float on the GX or the lights on teh multi.




the GX is showing the status of the Mulit not what the status of whet the BMS is doing.

Have i missed something here?


gringosailingexpeditions asked
sv-drumbeat commented ·

3 Answers

BYD Premium LVL 15.4 - weird approaching to 100% SOC while charging

Hi (and a happy new year, of course),

running 2 of the BYD Premium LVL 15.4 in a 3P config with MultiPlus II 5000 shows weird characteristics while approaching the 100% SOC - after updating to the latest BYD battery firmware levels. While charging (with relatively low current 10-20A) below 100% SOC all looks fine (max Voltage (CVL) 58.4V max Charge Limit (CCL) 468A) - once running at 99% for a while - so shortly before reaching the 100% - the max charge voltage (CVL) abruptly dropped to 56.9V (CCL to 0A) and the Inverters start to discharge with >160A for about 10-20 sec before start charging (low charge current) again. This hasn't been observed with previous BYD firmware levels and the same levels on the MPII and Venus. This happens now during all charging cycles reaching 100%, no exception. Is there any mitigation/workaround going back to a smooth approaching the 100% SOC ? Looking more at the nasty details i also saw that charging (~5A) continous at 100% SOC level while the BYD BMU reports a max charge (CCL) of 0A, the voltage is still below CVL - is that Ok ? Is the voltage level the important one and the mac current (CCL) could be ignored ? just to be sure the batteries staying healthy ;-)

best regards,


martghh asked
martghh commented ·

1 Answer

Quattro for 6kw monophase


ich habe einen 6kw einphasigen Anschluss für mein Haus,

muss der Inverter dann auch auf 6 kw limitiert sein oder kann man auch einen größeren verwenden?


helmut-oberhollenzer asked
kevgermany answered ·

2 Answers

SmartShunt and Smart MPPT 75/15 current draw

Hello all, first post here.

A couple of days ago I installed a SmartShunt 500/50 and a 75/15 Smart MPPT controller in a motorhome. When everything is off and nothing can be used the shunt is showing current draw of 0.10A to 0.20A.

According to the datasheets, the MPPT has self consumption of 10mA, and the SmartShunt is <1mA. 11mA combined for the two. However, I'm drawing 10 to 20x more. The accuracy of the shunt is ±0.1A, so shouldn't it be reading 0.1A as a maximum? I appreciate this is a minor amount... I'm just curious as to why the numbers are 10 to 20 times out.


A couple other question while I'm here:

Is there any value in creating a VE network and joining both devices?
For the shunt, I only updated the battery Ah. Did I need to do anything with other settings and options (Sync SOC, zero current calibration, charged voltage etc)?

I didn't really know anything about solar and electrics before this, so it's been a steep learning curve! Many thanks in advance.

pablo79 asked
kevgermany commented ·

2 Answers

Can a Multiplus II 50A be used in a 30A RV?

Hello. I recently bought a Victron Multiplus II 50A, with PE, N, L1 and L2 connectors on the AC lines. However, my RV has a 30A system, with PE, N and L. Can I use the Multiplus II with such a system and wire only the L1 circuit?

Thank you.

radubc asked
radubc edited ·

2 Answers

MultiPlus 12/2000/50 no longer accepts AC in (shore power or generator)

I have a MultiPlus 12/2000/80 managing my power system on a 2012 Sprinter Van Conversion. Inputs include solar, vehicle alternator, 2,500-watt Cummins Onan MicroQuiet generataor and shore power (generator and power connected to transfer switch). The system worked well for two years. This past week I turned on the generator and ran a vacuum cleaner. Not sure if I tripped anything but the AC in hasn't worked since. I happened to have my Victron Connect on while using the microwave (with generator running) and realized I was drawing down the house batteries (2X 100 ah battleborns). Checked and played with my settings on VE Config and can't get the AC work through the MultiPlus. I can see voltage coming in and frequency (~61 hz). Wiring wasn't really handled at all and appears to still be solid. Is there something I can re-set? Any help would be appreciated.

adoncap asked
Mike Dorsett answered ·

1 Answer

Cerbo is not updatable via VRM?


Although i can update the Cerbo via the Cerbo itself it seems not to be updatable via VRM. Is this normal?

thtruck asked
mvader (Victron Energy) commented ·

2 Answers

Cerbo GX and multiple battery banks

My sailboat has two battery banks. One is for my engine (it is an electric boat, so this would be a 48V 440A bank) and the other is for the house (12V 800A bank). Both have separate charge sources. Would one Cerbo GX handle this, or would each bank require a separate Cerbo GX? Also, would I require two GX Touch 50's?

ftlsailor asked
wkirby answered ·

1 Answer

ESS flapping between absorption and discharging

In the ESS System, when there is a stable situation with enogh exceeding energy - Bulk Charging is working well – but as soon as the batteries are sufficiently charged to switch to absorption, the Multiplus is flapping between absorption and inverter (discharge) mode in changing intervals of 10sec to 1 minute and with changing amplitudes up to +/- 10 Amps. I would expect a stable absorption mode with constant voltage and decreasing current for the configured absorption time of 2 hours – but no negative current at all.
I already have posted the problem in german language "ESS springt zwischen Absorption und Discharge alle paar Sekunden" but unfortunately no solution yet and therefore i repost in english language and with extended documentation.
I have done a lot of measurements and tests - see attached documentation also including configuration parameters. 2022 01 14 Absorbtion Problem Doku.pdf

Looking forward to your recommendations - Manfred

manfred-1 asked
manfred-1 commented ·

1 Answer

Current Limiting with Smart BMS 12/200

I am researching a Lithium install using the Smart BMS 12/200. The documentation states that, "the input current is electronically limited to approximately 90% of the fuse rating". How is this accomplished? It almost implies that it somehow senses the fuse rating, but I can't see how that's possible.

There seems to be zero documentation on the configuration options available via bluetooth, so I can't figure out if that setting is in the app.

douglane asked
douglane commented ·

1 Answer

Use Solaredge SMI 35 with RS450


I have an array with 8 modules connected to an Solaredge Safety Monitoring Interface 35 (SMI35)
I want to connect it now to my Victron with an RS450.I know optimizers are not good or not allowed with Victron, but hooked up via SMI35 possible? Does anyone know something about it?

ppr asked
ppr answered ·

2 Answers

Raspbian oder VenusOS

Hallo Powerlovers ;) ,

komme leider nicht mehr weiter und hoffe hier ein paar Anregungen zu bekommen.

Hatte bisher folgendes Setup in meinem, in die Jahre gekommen Wohnmobil.

Raspberry Pi mit:

  • Raspbian
  • Node-Red
  • eine selbst gebastelte Gasflaschenwaage mit HX711 über die GPIOs (Node-Red)
  • Relais Steuerung meines Kompressors für Luftfederung über die GPIOs (Node-Red)
  • LED Steuerung über GPIOs (Node-Red)
  • RaspAp (Hotspot)
  • Huawei USB-LTE Stick

Nun hab ich mir den Victron SmartSolar Charger MPPT gegönnt und dachte ich könnte den problemlos über die USB Verbindung in Node-Red einbinden aber entweder finde ich nicht die passenden "Librarys“ um den Charger in Node-Red nutzen zu können oder es funktioniert nur über die Venus OS?

Nun habe ich Venus OS auf einer frische SD Karte installiert und der Charger wird sofort erkannt. Nun fehlen mir die folgenden Möglichkeiten die ich zuvor hatte.

Ist es möglich die folgenden Anwendungen in Venus OS zu realisieren?

  • eine selbst gebastelte Gasflaschenwaage mit HX711 über die GPIOs auszulesen?
  • Relais Steuerung meines Kompressors für Luftfederung über die GPIOs anzusteuern?
  • LED Steuerung über GPIOs zu steuern?
  • einen Hotspot zu generieren?
  • Huawei USB-LTE Stick Mobiles Internet über den Hotspot zu verteilen?

Bin über jeden Hinweis Link usw. dankbar

Power UP!


beatstreet asked
Jens Rephöhler answered ·

1 Answer

Top Contributors - Community Supporters

kevgermany avatar image kevgermany 201 Answers & Comments
Matthias Lange - DE avatar image Matthias Lange - DE 189 Answers & Comments
mvader (Victron Energy) avatar image mvader (Victron Energy) 159 Answers & Comments
Alexandra avatar image Alexandra 136 Answers & Comments
nickdb avatar image nickdb 95 Answers & Comments
snoobler avatar image snoobler 95 Answers & Comments
wkirby avatar image wkirby 89 Answers & Comments