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Multi / Multiplus 12 500 20 inverter/chagers

What are the differences between a Multi 12 500 20 and a Multiplus 12 500 20? Thank you

sfg asked
Matthias Lange - DE commented ·

2 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

problem that is not in the manual, Please Help!

spyrosteven asked
Alexandra commented ·

2 Answers

Tension de batterie Lithium

Je suis equipe de: 1 batterie victron Lithium 100A super pack, regulateur MPPT 75/15 eu SmartShunt 500A depuis 1 mois. J'ai quelques doutes. La premiere: sur le SmartShunt je vois que tension de batterie mini 12,99V et tension de batterie max 14,27A . La tension mini elle est pas trop eleve? Le normal avec batterie en repos c'est pas 12,8V? Merci

garrbel asked
Thierry Cortassa (Victron Energy Staff) answered ·

1 Answer

Multiplus 3000 Startup procedure
I have somehow managed to fry 3 multis.
I managed to get an appointment at a pro shop after waiting a couple months and I was told “probly a short somewhere”
I have pulled every wire inspecting for damage and re-verifying correct placement. My working theory at this point is that I had improperly wired a manual transfer switch (generator/shoreline AC input back to multi), and that it was for some reason sending reversed polarity back to the multis….. I don’t know why else the breakers never protect the multi. I have removed the transfer switch entirely, and I will be installing a EMS surge protector in the shore inlet before the multi.
Any feedback appreciated
Multi 1:
Lasted and worked for maybe 3 weeks. Fried while plugged into 30 amps at RV park and running AC
Multi 2:
Fried while testing. Running generator and attempting to start AC
Multi 3:
Fried before I ever turned it on. Plugged in to 15 amp shoreline


My plan now for a first start up of multi is the following:

1. Remove fuse from alternator charger, remove fuse from solar, remove fuse from DC distribution.

2. Start multi in charger only mode and get it set up on the victron connect app

3. Switch to invertor mode and test for 120V at AC distribution with all AC breakers off

4. Test each individual AC circuit one by one

5. Plug the shore power in last which will now come through an EMS surge protector

6. Add fuses back to the Lynx distributor one by one

Any other ideas welcome. Thank you

slim-mcfats asked
Matthias Lange - DE answered ·

1 Answer

Possible to parallel connect a Phoenix 24/5000 and a 24/3000 inverter ?

I have a Phoenix 24/5000 installed and need more power. I intend to parallel install a second inverter which should be a Phoemix 24/3000.

Is this possible ?

Thanks for advice

globenomaden asked
Matthias Lange - DE answered ·

1 Answer

Battery Sense will not pair

Hello All,

Have the latest app version (v5.5) and will not pair to Battery Sense HQ2039QMWUI with my Samsung Galaxy S9. Will pair through BT phone settings but will not through app. Have followed troubleshooting guide (unpaired, restarted phone) but nothing works.

Please advise

bruizer-man asked
bruizer-man edited ·

2 Answers

Low Battery Alarm - MK3 Settings Screenshot

Hope all is well , purchased a second hand multiplus , installed and got a "low battery" flashing led , purchased an mk3 connect , settings are normal and should not be causing such an alarm. Any ideas? It seems like the multiplus is reading the correct voltage at 13.3 , the low voltage dc alarms are set much lower , pls help


Adam Hanafi asked
Paul B edited ·

2 Answers

Email address to send a service report

What's the email address to send a service report? Clicked the link inside the app to create using Yahoo mail, it attached the report.log but it did not enter the address to send it.

bruizer-man asked
Thiemo van Engelen (Victron Energy staff) answered ·

1 Answer

UK Installer List

Hi, New to the group. How do you find an Victron installer/engineer in the UK please. North West England ideally.

Thanks, Clay

manicorganic asked
manicorganic answered ·

2 Answers

Need help with wire calculation regarding 120mm2

Hi all,

Im designing the electrical of my campervan, and im having trouble with the wire going from the busbar (positive and negative) to the battery. According to calculations the cable should be 120mm2. But that seems so bulky for me.. Could anyone help out? Thanks.


14129 asked
14129 commented ·

3 Answers

How do I regulate the charging current? / Wie kann ich den Ladestrom regulieren?

Hello currently I have 8x 280Wp panels a Multiplus2 and mppt150/70 as batteries I have 2x 12v 230Ah AGM batteries connected to 24V. Now I would like to expand my system by 20x 250Wp panels. I would connect these with 2x mppt 100/50 but I wonder how I can limit the charging current but still use full power on the multiplus.

Glad about any help.

Greetings MrYoshii

Hallo aktuell habe ich 8x 280Wp panels einen Multiplus2 und mppt150/70 als Batterien habe ich 2x 12v 230Ah AGM batterien zu 24V verbunden. Nun würde ich gerne mein system um 20x 250Wp panels erweitern. Ich würde diese mit 2x mppt 100/50 anschliesen nur frage ich mich wie ich da denn ladestrom limitieren kann aber trozdem volle leistung am multiplus verwenden kann.

Freue mich über jede hilfe.

Grüßse MrYoshii

mryoshii asked
mryoshii answered ·

3 Answers

Generator auto starts everyday at same time - SOC momentarily drops to 0% on Venus - battery BMS does not show this SOC drop

Good Morning,

I basically an off grid system - 1x8kva quattro, 3x7.2kw Solar MD batteries, 11.5kw PV array, using a venus - has a 14ka genset for backup - there is utility available - but only used in rare circumstances - so is isolated off.

Since 19th September - each day around 13:14 to 13:24 my genset will start, run for 5 minutes and switch off.

I have enabled the genset to run under 2 conditions

[1] SOC drops to 15% - Start | SOC reaches 40% - Stop | AC1 returns - Stop

[2] The inverter load is 6000W for 30 seconds - Start | the inverter loads drops to below 4000w for 30 seconds

on both the minimum run time is 5 minutes.

Battery monitor is set to automatic - has selected the Solar-MD bms on CAN-bus

When the genset automatically starts - the reason given is SOC

I have looked into the advanced page of the setup - it will not indicate the SOC has dropped below 80% - however on the dashboard historical data shows it does drops to 0%

Have looked at the battery BMS - SoalrMD have a very accurate logging system - SOC not shown to drop below 80%

My main query is the timing - it is the same time each day + 1 minute.

Any help would be great.

have looked for gremlins - haven't seen the furry guys yet.

Alex Rodgers asked
Alex Rodgers edited ·

0 Answers


PN OR|121222110

I need the manual on how to install this.

Is there a way to add bluetooth to this?

charles-vretis asked
Matthias Lange - DE answered ·

1 Answer

Victron Quattro 10KW delivering only half rated power

I have dual Quattro 10kva/120s in split phase. We are 'off grid' and have exactly 20kva solar input available using enphase micro-inverters a/c coupled to AC-OUT1. For the battery storage we have 110KWH of lithium ion batteries. These feed the inverters via a Lynx 1000amp bus system with 4/0 cables going to the inverters. Quattro firmware is 430.

When the sun is shining, I have plenty of power available, no issues whatsoever. We can routinely run 15 to 17000 watts of electrical load and STILL charge the batteries at 100-150 amps DC. No thermal or overload issues at all.

However, once the sun is down, if loads go above 10000 watts for any length of time L2 gets a temperature alarm and shuts down the system. This is most frustrating. Our entire farm is on this system, including AC, water heater, well pump, etc. At time of shutdown the Color control shows 4900 watts draw on L1 and 5010 watts draw on L2.

Our A/C draws about 20 amps (240v) when running, which is right at 100 amps of dc.

Throw in another load, such as charging one of our EVs at 20 amps (240v) and the system will only run for between 10 and 20 minutes before we get the dreaded:

VE.Bus System Automatic monitoring Temperature L2: Alarm 2021-06-16 20:06:37 1m, 15s

appears and the inverters shut down.

MOST annoying.

We are using a 1000 amp Lynx system with two sets of 4/0 battery cables to the Quattros.

Cables are matched for length and size.

What can be done to increase my available power when running on batteries?

jlportman3 asked
Alexandra edited ·

2 Answers

Why vrm not showing connected devices?

Hello, I am sorry if someone question that. Today, I saw that again. When I open FRM APP to see battery percentage and with how many watts charge PV, I am not saw PV, battery and invertor consummation. I am using Raspberry Pi 3b plus version to run VRM. I reboot device from VRM Remote console, and after reboot all show up. How to fix that? I am connect raspberry pi power supply to invertor, can that is the problem about that.

My setup is 2x PV solar panels, mppt charge controller 100/30, invertor Phoenix 24/800 l, smart shunt 500, two batteries and raspberry pi3b plus.

Thanks for answer in advanced.

hrischo asked

0 Answers

250/100in float not fully charged

why would it say its fully charged when its not, im thinking about changing the abs to 5min now its does 1 min i have lithium batts not lipo4 real lithium

kevin-b asked
Alexandra edited ·

2 Answers

Why not show me real watts AC Load on VRM

Hello, today I setup my solar system and I saw that. I have connected raspberry pi for Venus OS and monitoring and consummation is 13w. My question is why that 13w not showing in AC Load? But when I connect other consumator like 200w I see that 200w in AC Load.

Thanks for advanced.

My system is 2x445w solar panels, invertor Victron Phoenix 24/800, smart charger controller Victron 100/30 l, smart shunt 500 and two batteries.


hrischo asked
Matthias Lange - DE answered ·

1 Answer

Can monitoring the system out home

Hello, I have small solar system and I will install on my raspberry pi 4 Venus OS. But my question is when I am not at home can I view how many watts charge, consummation and etc? Thanks for advanced.

My system is 2x445w solar panels, invertor Victron Phoenix 24/800, smart charger controller Victron 100/30 l, smart shunt 500 and two batteries.

hrischo asked
hrischo commented ·

1 Answer

#1 device switched off -sometimes permanent

Hello all,

as you may know iam new to Victron (1 week now).

And unfortunately, I'm already getting a headache.

Besides all the minor problems (battery is discharged above the overcurrent limit, or not at all although I draw from the grid), I have since the beginning the problem that power outages happen from time to time. (Grid stays ok)

One time i had to manually turn down every Voltage (Bat + Grid) to restart the Multiplus.

I have 3 Multiplus 5k/48V

No alarm is recorded in the VRM.

Today I got the alarm "#1 device switched off" in Cerbo.

Since I have had several outages (about 2 per day), I set up a camera to film the Victrons.

What can I do here? No one was home, so consumption was very constant. There was no washing machine or dishwasher running or anything like that.

The battery was full and not in use.


FW Cerbo (Venus OS) : 2.72

Multi 2 : 482

The Inverter with the LED Code swaps always. Sometimes L1 (Master), sometimes L2 or L3.

Sorry for the Cablemess- i changed everyCable to nail down the Problem.

marv21 asked
shaneyake commented ·

3 Answers

VictronConnect App will not pair with MPPT 100/30

I've rebooted everything, got rid of, and then reinstalled the app. Turned off and on bluetooth. But when I try to pair with controller over bluetooth I get the same message "cannot connect" I've tried everything in the trouble shooting manual! The professional I bought the used system from says "it's a mystery" and Victron says they don't deal with end users. And the solar doesn't even show up in my devices list (just the controller). Can anybody help??? TIA I'm using an iPhone 11.

mora asked
Thiemo van Engelen (Victron Energy staff) answered ·

5 Answers

Can I use a charge controller on a solar generator to regulate voltage

I'm guessing a lot of you are familiar with the term solar generator? An all-in-one lithium battery pack with an inverter, converter, solar charge controller, and numerous inputs and outputs.

I have quite a few of them and they all have different specs when it comes to charging from solar. I'd like to max out my solar array for the largest one which has a 48 volt battery bank and a 150V/12A max DC input but then I'm unable to use that same solar array for smaller ones. Some of which are wired for 24 volts.

If I wired in an additional victron solar charge controller like the 150/35, would I then be able to use the same solar array for the smaller solar generators? The smaller ones have a maximum VOC of 25.

curb71 asked

0 Answers

250/100 float

why would the float green light be on when your not at float volts?

kevin-b asked
rickp answered ·

1 Answer

Multiplus flashing leds not in toolkit

Hi everyone, I have some weird LED flashing on my multi + 3000 while trying to program with MK3 USB adapter. after that series of light stop splashing it goes to these solid LEDs. Any idea what's going on? Dealer isn't sure either? We walked through each step one by one. I also can't connect to Veconfig or veconnect. Leaving for vacation on the 9th.


l33der asked
jbmobile303 commented ·

0 Answers

200ah 12v lithium smart battery + dc-dc charger

Hi All,

Does the 200ah 12v lithium smart battery require a dc-dc charger if you're also connecting it to the 200/12 BMS?

It doesn't show any requirements for a dc-dc charger in the installation manual.

Thanks in advance


radnesas asked
radnesas commented ·

1 Answer

Full 4wd 12V system install help

Hi all,

I'm looking to install the following into my 4wd. I purchased it all separately without thinking if all the components went/worked together or not.

200ah 12.8v lithium smart battery

BMV 712-smart monitor

BMS 12/200

Phoenix Smart Inverter 12/2000

Smart Solar MPPT 100/30

I cant find any specific instructions that tell me things such as where the smart monitor is installed when also using the BMS.

Can anyone help with that along with other build specific questions? Victron don't have a very good support network from where I'm from unfortunately.

Thanks in advance


radnesas asked
radnesas commented ·

1 Answer

Color Control GX making noise

I got my Color Control GX hooked up today and I noticed it makes a constant noise. I wouldn't call it a buzz. More like a muted white noise. Or maybe the sound of a loud speaker being but not playing music yet. Its not crazy loud or anything but you can hear it when close to it.

Is this normal?

showtime3 asked
nigelfxs answered ·

5 Answers

What makes the most sense for my bus conversion build?

Howdy! I'm looking for a little help as I've figured out the beginning and end of my solar set-up but it seems like there's multiple ways to fill out the middle. I was originally piecing together a build based off of youtube but I like the idea of a mostly victron system where I can still cheap out on a couple of the components.

Here's what I'm working with so far:

  • 4* 400W solar panels (50.4V / 10.18A)
  • 24v Lithium battery bank

My panels are going to be wired in series so I've been eyeing up the EasySolar II since it seems capable of handling the 200v input from the panels. I will be using 120VAC and 12VDC in the bus so I need to figure out the best way to handle the 240VAC output from an easy solar II unit.

Alternatively, it seems like I could just get a 250|70 mppt solar controller and work that into a cheaper 2000W 24V inverter connected to a battery monitor and then the battery bank.

Will there be a 120v easysolar ii coming out? Is there a different product(s) that makes better sense for assembling my system?

Side question: how feasible/complicated/expensive would it be to integrate my 24v solar power system with the 12v system of the schoolbus?

Thanks in advance for any insight!

Matthew Woods asked
Vance Mitchell commented ·

2 Answers

How to upload picture to the community?

Before i ask my main question i cannot see how to upload pictures, IT is not my thing. thanks in advance

busdennis asked
Ulrich answered ·

1 Answer

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