Multiplus will not run from battery

Hey, I have the multiplus 24/3000 and it is currently connected to shore and everything runs great. It tells me my batteries are full charged, and when I cut the power from shore, I don't get any. power from anything.

When I test voltage on my batteries, I get good readings, along with all my connections in the system. My problem seems to be when I connect the negative lead to the multiplus, my voltage then drops from 25V to 2V.

This is 3 straight nights of trying to diagnose, and I'm at a loss. Please if someone can help it would be great. Thank you.

Colby Bell asked

0 Answers

MPPT 75/15 Einschalten mit 4V Differenz möglich?

Ich habe ein neues Wohnmobil mit fest installierten 150W Solarpanel. Ich bin im Frühjahr auf den MPPT Regler umgestiegen. Jetzt sind wir unterwegs und ich muss leider feststellen, daß das Panel bei bedecktem Himmel max 17-17,5V erzeugt und damit der Regler selten die Differenz von 5V zum Starten sieht. Da ich ungern das verbaute Panel ersetzen möchte, brauche ich eine Lösung, den MPPT zum Starten zu bewegen ohne die 5 V Differenz. Ich hoffe, sie können mir hier helfen.

Mit freundlichem Gruß

Stephan Schulz

Steschu1 asked
Matthias Lange - DE answered ·

1 Answer

Easysolar-II GX state of battery charge does not show


I have freshly installed ES-II 48/3000/35-32 230V MPPT 250/70 GX. The devices LCD panel or mobile app nor the Venus IP ”settings page” does not show the state of battery charge at all. What could be the problem and what should I do? How do I know if the system is charging the batteries at all?

I have seen pictures Where the GX lcd panel displays the state of battery charge but in our device that view is totally missing.

See pic


kkiksu asked
JACOBJNED commented ·

3 Answers

VE.Bus low battery alarm, why?

I am getting Low Battery warning at a voltage that is different than configured in the settings. The pre-alarm is set to 10.9V, the ESS assistant is configured to do a cut-off at 12V@0.005C, yet, I am getting alarms when voltage drops below 12.25V at a much higher discharge rate. The battery monitor Voltage reading = VE.Bus DC Voltage reading so it doesn't look like a cabling issue.

What am I missing?

I am using VE.Bus firmware 465.






wrietveld asked

0 Answers

Cerbo Networking issue with USB->Victron Direct Cable

Hello All,

My Cerbo is in up and running and I am learning how to use it. I have one problem that I think is really odd.

My very basic learning setup: Cerbo, Solar MPPT, 24v Battery, Load, USB -> victron direct cable. (I have a victron direct->victron direct cable coming this week, but want to test with what I will actually be using)

Problem: The Cerbo will not transmit any data over wifi only when a USB->victron direct cable is plugged in.

Everything is setup and working fine on the cerbo side, I have VRM, I have access to the menus, life is good. Then I plug in my USB cable which goes to the solar MPPT and everything is bad. I instantly lose all VRM connection including local LAN remote console via IP. I still have bluetooth, and it still shows in the networking menu that all networking is connected, it provides an IP address.

I unplug the usb cable and like magic, everything instantly works. Plug back into another usb outlet, bam no worky. Unplug. Work.

Some more info:

SmartSolar MPPT 75/15 - Frimware V1.50 / Bluetooth Interface V1.11

Cerbo GX - Firmware v2.57

Everything is new out of box. Voltages are good. SmartSolar has been working for a couple of months as I waited for the Cerbo.


Mike Deau asked
Mike Deau commented ·

1 Answer

Using Tesla battery with Multiplus 5000 24v ESS - Your experience

I’m looking for anyone who has experience of using a Tesla battery module(s) with a Multiplus and is willing to share their views on:

1. What BMS they have used, how it was connected, configured and how well it maintains cell balance together with any positive or negative points.

2. Battery Protection - how they have protected the system in terms of Over/Under Voltage and Over/Under Temperature and what devices used.

3. Configuration, Assistant and other parameter settings used.

4. A schematic of their setup.

5. Any other views or observations like don’t even think about this or its the best thing I did.

My current setup is running ESS using a Multiplus 5000 24v, CCGX, 3.8kw solar via grid connected inverter, 12x2v lead acid cells (old and dying).

Many thanks


MikeGC asked
Mike Deau commented ·

4 Answers

ESS System Phase Compensation Help

i installed 3x MP2 3000VA /48V. Updated Firmware to 2629474. made ve quick config, setted all settings. made the ess assistant in each MP. Now i try everything but the whole system acts like phase compensation is disabled although it is enabled. each inverter does only deliver so much power as required on the specific phase according to the grid meter. No idea why the compensation setting in the venus gx is not working. Please help!!

AC L1,L2,L3 is connected to MPNr.1-ACIN, MPNr2-ACIN, MPNr3-ACIN. The system is useless. If the electric car is plugged in on one phase with 7kW it only delivers max. 2.4kW from one inverter, if no other loads are switched on. If someone cooks on L2, i only get 2.4kW from the inverter on Nr.2.

I read all installation manuals, the training video on the Victron professional side, there is no hint what is wrong, looks like a software bug on the Venus gx!



gnagflow asked
gnagflow commented ·

5 Answers

Multiplus 12/300/50 Will not switch to mains

Over the weekend I installed a Multiplus 12/300/50 in my RV. It intermittently will not switch over from inverting to charger/mains power. Incoming power is good and stable, and I read 120VAC 60Hz at the line in terminals of the Multiplus. When I connect my laptop via MK3 to USB I connect fine and the Multiplus shows no incoming power available. I have updated the firmware, and verified the settings are correct (mostly factory default). I did pull the shore cord yesterday and plugged it back in and it switched over and everything was fine and I thought it was just a fluke, but today I unplugged the rig to do some other work and when I plugged it back it it would not switch off of inverter. I am assuming there is a hardware issue in the Multiplus given that I see voltage on the terminals (even doublechecked the wire placement via the markings on the board and the book), and given that it is intermittent, but if anyone has any thoughts before I go through the hassle of a RMA and pulling it I would love to hear them.


Neil Citro asked

0 Answers

Orion 12 / 24 - 20 Converter: Zero Load consumption when remotely switched off

According to this thread:

the new Tr Smart dont draw any current, when remotely switched off. Can somebody say whether this also aplies to the non "Tr Smart" units?


Sponk asked

0 Answers

VRM solar temperature source

Under “System Status in VRM” in the “Solar Yield” quadrant/box of the dashboard there is a temperature number listed there.

Where is that temp sourced from?

Directly from MPPT controllers? If so, which one if multiple?

Area temperature based on weather reporting and stated location of site in VRM?



Geomz asked
Ghostrider commented ·

3 Answers

AC Current Sensor with Raspberry Pi/Venus OS

I am running the Pi with a BMV & MPPT - is it possible to use the Victron AC Current Sensors with the Raspberry Pi to measure as "AC Input" and/or "AC Loads" or is this only possible by using something like a Multiplus? I think at a minimum it would require some way of getting AC current to USB or some pin on the Pi?

I've seen posts where people have figured out how to use analog temp/tank sensors, but what about AC Load/Input?

Ghostrider asked
Ghostrider commented ·

2 Answers

Simultaneous MPPT and Fronius doesn't use all the PV to charge the batteries


Here is the configuration of Quattro 48/8000:

Fronius Inverter (7kW) on OUT1

MPPT (4kW) through DC-BOX on Pylontech Lithium batt

it runs under ESS Optimized (without BatteryLife).

I don't understand why the Fronius energy doesn't go to charge the battery ... here the problem :


1570W into the grid instead of charging battery...

how can we correct this behaviour ?

I can give you more details if necessary.

Best regards,


khaem asked
Matthias Lange - DE answered ·

3 Answers

Is it possible to connect PV or MPPT directly to Multiplus 24/5000/120?


Is it possible to connect directly at this Multiplus the mppt or PV to the battery pole +/-?

best regards,


phys.1989 asked
phys.1989 answered ·

3 Answers

One 110W Panel or 2x 50W panels with Smartsolar MPPT 75/10

On the recommendation of my local dealer I've bought a Sunpower 110W panel and a Victron Smartsolar 75/10 controller. However on reading the specs and manual in detail I note that the panel is 32 cell and the controller recommends minimum of 36 and ideally 72. Is this a significant issue or not something I should be overly converned about? As an alternative for about the same price I can buy 2x Sunpower 50W panels to connect in series. Is this likely to give me a better overall output due to the higher cell count and voltage offsetting the small reduction in total power?

Battery is 12v. Usage is on boat so partial shading will occur at times, which I'm aware can be more of an issue with panels connected in series but will that be any worse for 2x 50 W panels compared to the 1x 110w panel of about the same total area? Initially we'll on the south coast of the UK but potentilly going to the tropics in due course.

Specs are

Model SPR-E-Flex-110

Nominal Power(Pnom) 110 W

Power Tolerance +6/–3%

Rated Voltage (Vmpp) 18.8 V

Rated Current (Impp) 5.9 A

Open-circuit voltage (Voc) 22.8 V

Short-curcuit current (Isc) 6.3 A

Power Temp Coeffiecient –0.30%/° C

Voltage Temp Coefficient –55.8 mV/° C

Current Temp Coefficient 3.5 mA/° C

Max. System Voltage 45 V


Model SPR-E-Flex-50

Nominal Power(Pnom) 50 W

Power Tolerance +/–3%

Rated Voltage (Vmpp) 17.7 V

Rated Current (Impp) 2.8 A

Open-circuit voltage (Voc) 21.5 V

Short-curcuit current (Isc) 3.1 A

Power Temp Coeffiecient –0.35%/° C

Voltage Temp Coefficient –58.9 mV/° C

Current Temp Coefficient 2.6 mA/° C

Max. System Voltage 45 V

Many thanks,


brucekav asked

0 Answers

Cannot post a question using emoji

EDIT: the reason is a bug/'feature' with non-ascii smiley characters :-(

This has now happened thrice in a row. Ipad, both Safari & Chrome; question ca. 2000 characters long, new verified user.

What is the problem?

"An Internal error has occurred and we are sorry for the inconvenience.

We are doing our best to fix the problem as soon as possible."

Ksytsi asked
Guy Stewart (Victron Community Manager) commented ·

4 Answers

Mppt 75/15 firmware update disturbs function

Mppt 75/15 after firmware update July 2020 the PV voltage is blocked at 16,3V and therefore the controller is not starting properly as the 5V threshold is not met. Can I go back to the former firmware? Can I reset the hardware? On full sunny day yesterday the charging was max 30% as normal

Steschu1 asked
mickyritchie answered ·

1 Answer

How I control Grid feeding and Battery charging by Aux2

I am using Victron Quattro 48/10000VA. I have controlled GRID feeding (limited) and Battery Charging(limited) without SOC controlled by auxiliary Input (AUX1 or 2 ).

Deepaksahu23 asked
Albert vd Westhuizen answered ·

1 Answer

Bluesolar MPPT 150/85 (VE.CAN) and BlueSolar 150/60 (VE.Direct) not working well together with Color Control and ESS


I have the following setup:

Multiplus II 48/5000/70 (v466) with Tsense, Vsense connected, VE.Bus from Color Control.
Bluesolar MPPT 150/85 VE.CAN (v2.05) without Tsense and Vsense connected, CAN from Color Control.
Bluesolar MPPT 150/60 VE.Direct (v1.50) VE.Direct from Color Control.
BMV-702 (v3.10) with Vmid-point connected, USB to VE.Direct from Color Control.
Color Control GX (v2.57) running ESS with DVCC.

The most recent addition is the 150/85 CAN MPPT and after connecting it, the system appears to throttle down the other VE.Direct 150/60 MPPT almost completely. If I turn on large loads the VE.Direct 150/60 MPPT will start briefly but soon stop charging completely.

As per this screenshot for example with a 2.4 kW AC load:


The 150/85 as displayed is running at its full connected PV capacity of just over 1 kW. The 150/60 MPPT can deliver about 2.5 kW of PV capacity, yet remains idle. As can be seen by the BMV current draw at the top, the battery is actually being run down even though there is adequate PV power available to cover this load and charge the battery.

This persisted until the system went into Bulk with the 150/60 MPPT not providing any sort of significant charge.

When I unplugged the CAN connection to the 150/85 MPPT, the 150/60 MPPT woke up and started delivering full power while the 150/85 continued to provide it's ~1 kW (running in standalone). Reconnecting the CAN reverts to the previous state with the 150/60 dropping to idle. This leads me to believe that this is not a premature Absorbtion/Float issue as I watched the system get to a proper float state rapidly with the CAN disconnected and the 150/85 running.

I have tried toggling DVCC completely as as well as all of it's sub-options to no avail.

Both MPPTs also have the same absorption and float voltage settings and follow very similar cable runs. The only caveat is that they connect to the main battery cable just outside the Multiplus's DC input and not to the battery posts but I don't see that this should be an issue especially given the Multiplus's shared V/T sense connections.

Any advice on how to make the 2 MPPTs deliver full power (at least in bulk) would be appreciated unless this scheme is not actually supported. It seems that it should be. Given that it works with 1 MPPT in external control and a second without.

Kind regards

craig.tong asked
craig.tong edited ·

0 Answers

Venus GX data modified on VRM?

Hi, I installed a Venus GX to monitor a solar system, it works very well and I found the problem... the customer was sucking -80amps @ 50v (yes 4kw !) using the system to make tea and toast at the same time !

The system overloaded and shutdown (funny that !) so it was maybe only at 4kw for 10-15 seconds.

The strange thing is... a few hours later I logged in and the -80amps was clearly depicted on the V/A graph, clear as day and a pleasure to see.

But when I go back in to show the customer the logging, the particular -80amps plot is not there anymore, all of the days data is there, I am familiar with logging software I have triple checked the dates, times etc, I have stretched out the data to the hour that it was covered in, I have downloaded and reviewed the xls file,

But there are no xls timing gaps, there are no graphical gaps, it is like the software has 'smoothed' the 10-15 seconds of -80amps down to a more consistent -10amps for that time of the day.

How I wish I had taken a screenshot.... and now I'm even questioning did I really see it !

NB the shutdown was an Outback Inverter so there is no Victron error log, likewise no low battery alerts as none were set.

Appreciate any comments.

Oropi asked
Teun Lassche (Victron Energy Staff) answered ·

3 Answers

Pulse meter graph available in VRM portal?


I would like to graph the pulse meter values in the VRM portal. At the moment it appears there is no widget available for this?

If this is not available yet but if it is being looked at, the Y-axis could be flow/minute or an accumulated flow per day.


casper asked
Teun Lassche (Victron Energy Staff) answered ·

1 Answer

Cerbo device list detail

The SmartSolar MPPT250/60 in one of my installations appears 100% under Device List on the VRM Portal. Same on the VictronConnect mobile app. In the Remote Console however it is listed as BlueSolar Charger only with no further product details. I'm using a Cerbo GX (my first). What am I doing wrong? Other than the product name it is working fine, shows that it is a VEDirect connected device and no errors.

Nama asked

0 Answers

Generator Configuration missing in EasySolar IIGX remote console?

I've got a EasySolar IIGX and wish to connect my generator and configure autostart and silent hours, however the Generator menu seems to be missing from mye Remote Console - I can only configure the generator from VEconfig. Am I missing something here? Are the advanced generator features of the Multiplus not available in the Easysolar? Any tips to how to set up silent hours using EasySolar IIGX? asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

MPPT 75/15 - Consumption - why is consumption high when there is no load?

Hi all,

I am new to solar and need some help. I have a simple solar set up two 300w panels, victron MPPT 7/15, victron phoenix 24v 250 inverter and two 140ah AGM batteries in series. Attached to the MPPT load I have a USB charger to power a mobile phone. I also have a blue tooth dongle attached to the inverter to link to the phone / app.

I have a breaker in between the panels and the MPPT and fuses between the MPPT and batteries and between batteries and inverter - all on the live wire.

When everything is off - no load on either the USB or inverter (inverter is switched off) the Victron app is showing consumption of 50Wh.



The system ahs been running for around 2 months. Initially consumption was no more than 40wh but in last week or so it has been over 100wh (but with load - laptop / two monitors c100w - 140w).

Questions I have are:

1. Is this normal / typical?

2. If not normal what could be causing it? Problem with MPPT / batteries / connections / panels / fuses?

Any help / advice greatly appreciated.

Andrew Aikman asked
Vance Mitchell commented ·

3 Answers

How to connect an external 3 position switch - (Remote simple 3 way switch)

I seem to have a similar issue as the user @trololirko (post-link) and @Posse

I bought a simple 3 way switch from a local hardware store:


And I connected it in this way, with a Yellow, Red and Blue cable, to the Multiplus 12/800/35


Now i read in the manual that the 3 way switch must be connected to the terminal L:



I guess we do it like this, right?

zuzullo asked
TrinasGarden edited ·

4 Answers

Transfer to AC IN on one phase in 3 phase system

1. 3 phase system with 6 3kVA Multiplus in off grid config. To maximise solar consumption I have set up assistants (general relay plus either programmable relay or gen start / stop will do this) to transfer to AC IN once the battery discharges to a certain level. This is set only on the master on L1 and will use the chargers on all the Multis. Works well.

2. But when inverting again an overload can occur on L3 due heavy loading. I dont have time to rebalance phases just at the moment so was hoping to emulate the assistants above to solve this too. But it does not work.

If Ioad the logic on L1 Master.. it does not affect L3 (unlike the voltage sense/ charging assitant in 1. I tried either the programmable relay or gen start/stop relay on the L3 master , plus the general relay assistant, but nothing happens.

Note the PV assistant is in place on all masters.. and is the last assistant.

Is it possible to get L3 to transfer to AC on overload condition during inverting?

I had no problem setting this up on a single phase system to test.. so my assistant logic works.. it just does not in a 3 phase set up.

mblowes asked
mblowes answered ·

1 Answer

ESS system doesn't react not balanced to high AC-load

Hello Specialists,

I run since several weeks a 3-phase ESS installation with Multiplus-II 3000, 48V, a grid based 3-phase PV and a 8 pieces Pylontech stack with US2000. It works quite okay and perfect. But based on certain circumstances it has behaviours I don't understand. I hope somebody can have a look and give my feedback.


On L3 is charging a Nissan env-200 with about 3,6 kW. Based on the remote console I see that the systems buys AC energy from the grid L3 with 1,2 kW and 3,2 kW is discharged in DC from the batteries. PV is very low, is equal to 0. The ESS system delivers/buys in total about 4,4 kW energy for a total AC load of 3,9 kW and with respect to yield of converting DC to AC I think this balance is correct.

I understand that a Multiplus-II 3000 is only able to deliver 2,4 kW AC which fits perfect with the grid buy of 1,2 kW to the total of 3,6 kW load on L3.

Question: Why is "no-traffic" on L1 and L2?

There was some time ago a similar discussion from @gnagflow but I couldn't find there a final solution. As I didn't wanted to hijack his thread I made my own question. But in this thread there was the hint:

... you have to turn phase compensation 'off' to get ...

I tried both settings the standard, "total of all phases" as recommended as standard


and "individual phase"


but it didn't change in behaviour of L1 and L2! It looks to me, that the Multiplus for L1 and L2 are in standby, isn't it?

I checked what could cause this "unbalanced" answer of the ESS-system. There was no battery discharge limit, it was set for 200A, the battery temperature was normal with 22°C - I have seen in the past discharge value of the batteries up to 180 A for high 3-phase AC loads, so each Multiplus is able to use individually 60 A to do it's job.

In Victrons ESS documentation there is mentioned:

"Phase compensation enabled (default & recommended)

ESS balances the total power (L1 + L2 + L3) to 0 W.

Intelligent optimization of the balance between the phases

ESS intelligently optimizes the balance between the phases -
as far as possible."

"as far as possible" - Where is my missunderstanding or my problem?

What can I do to puzzle it out?


DayAndNight asked
gnagflow commented ·

2 Answers

Victron Energy Smartsolar 150100 Failure/Repair

Unit was installed about 1 month ago.

15 panels, 5 strings of 3 Min Temp 5 degrees C Max 50 degrees C


Freedom Won LiFePO4 10/7 battery CCGX color control to a Victron 5 Kva Multiplus 2

Unit worked perfectly, Now not even one L.E.D. Light is on. It appears to have a dead short on the PV input. If connected no voltage reading if disconnected we have a normal string voltage reading.

All battery terminals are well installed and tightly fitted

Any way of disassembling the unit to inspect?

Any explanation as to what may have caused this failure ?

Picture of installation.



Howard Massey-Hicks asked
Howard Massey-Hicks commented ·

1 Answer

Campervan Leisure Setup in 12v or 24v

I am just finalising my options for a campervan setup and am unsure whether to go with 12v or 24v.

2 x solar panels 270watts each, alternator charging through a dc-dc charge controller and a standard shoreline connection.

In consumption all the normal mod cons are specced: fridge, water pumps, lighting etc. The only concern is running an induction cooktop through an inverter, no gas is a big design criteria on this build!

The base vehicle is 12v so it would be simpler and more cost efficient to have a 12v leisure battery but I am wandering if it would be worth going up to 24v on all the habitation batteries and consumers to achieve a greater efficiency whilst inverting to 230v for the induction. Does anyone have any experience with induction. I am planning to use standard agm batteries for the short term until funds allow a lithium upgrade.

Many thanks

Dominic Planel asked
TrinasGarden edited ·

5 Answers

Displaying battery current although there is consumption

Hi I have 75-15 Bluetooth mppt and 2x110 w solar panels. Although there is no consumption on the battery the app shows 10 current like there is a device consuming energy. I also have a LCD digital display and it shows no consumption. I wonder why the app shows current and accordingly the solar panels keep producing energy. Thank you

Sunlee asked
TrinasGarden edited ·

3 Answers

MPPT dropping into float

I have 2 150/60s and they've been working for years. The panels are on different elevations but split evenly between banks. Yesterday both mppts produced around 17kWh each. Today one of them has been in float all day and the battery is at a reported 85%. The voltage is showing at 48.xx whilst a multimeter shows 52 at both mppts. Tha panels are all a bit grubby with dust, but not obscured. Last night I had the mains connected to top up the batteries, so this morning the ccgx showed 100%. It's been a gloriously sunny day and the batteries have been slowly discharging all day. Is this a known issue? They are both running software 4.2.

Paul Carmichael asked
TrinasGarden commented ·

2 Answers