How to Program a Victron MultiPlus-II Inverter for LiFePO4 Batteries (SOK)

Download the software from Victron: www.victronenergy.com
Inverter shown in video: www.currentconnected.com/prod...
MK3-USB Converter:
www.currentconnected.com/prod...

[@michaelsilvey560]

Wish I had watched this videos weeks ago. You take a simple setup and explain everything from software download.

[@markfuchs1225]

Excellent resource for setting up the Multiplus II for the first time. Thank you for taking the time to make this! Kudos.

[@silvanocometta9760]

Hi. I have a related question. In order to see the Multiplus on the Victron app, do I need the external USB device always connected to the multiplus? In fact, I see all Victron devices I have installed except the Multiplus 3000. Could there be any other reason for that? Thanks and regards.

[@DesertRatLife]

Keep up the great videos, Just used this for an installI I did recently. Id like to see more videos for all the victron products you sell and proper settings for each one using SOK batt. Smart shunts, charge controllers....

[@stephensecord7200]

Thanks for this tutorial. Recently bought a 204 SOC from you and ordered this Multiplus II from you yesterday,

[@CurrentConnected]

Glad we could help. Hope you enjoy it! The Multiplus is a FANTASTIC piece of gear!

[@WillProwse]

How cool!!

[@johnguilbert1349]

Great video! Victron rocks!

[@ariverstonesthrowaway]

great video! thank you! Will be installing my new Victron Multiplus-II with my SOK batteries.

[@CurrentConnected]

Glad it helped. Let us know if you have any questions!

[@axlebarr275]

thanks for doing this, keep em coming

[@DeekJohnson]

Great job...amazing how interface still looks like Window 7

[@SonoranSpaceProgram]

This was so helpful, thank you!

[@Hallstop_hangout]

Great video, exactly what I needed for my just installed Multiplus 2. Appreciate the help.

[@CurrentConnected]

Glad we could be of assistance! So many customers get confused that there is no interface on the unit, or bluetooth function, that they thing there are no settings...It's got so much functionality that it's insane.

[@Hallstop_hangout]

@@CurrentConnected Definitely a lot that can be done, just a matter of knowing what to do. Thanks for the help !

[@CurrentConnected]

@@Hallstop_hangout You got it! Any time :)

[@davidhaagensen4265]

Thank you most exhalent description 10/10

[@davidpatrick1813]

You deserve a raise in pay. good job

[@olivierbourgeois3230]

Thanks you so much for sharing. Much appreciated!

[@Zenmartian]

Great video, thank you so much!!

[@dhol267]

Thank you for this!

[@goobiie]

Great short video 👍

[@williamirizarry1113]

Very good video. Thank you!

[@CurrentConnected]

Glad we could help! Soon we are also going to show the Multiplus-Compact, so if that interests you stay tuned.

[@dhol267]

Thanks for this! One question though: I noticed on your website under the 206 ah SOK you recommend 11v for the low voltage disconnect instead of the 10.5 in this video. Is this because of the larger battery size or just updated info? Thanks again!

[@alexb.6800]

Helpful video, thanks! Could you advise on settings priorities? There're VE.Configure, VE.Connect apps, CerboGX - what's the priority of settings for the system if they contradict there?

[@mfr58]

A couple of things...when using with a server battery like SOK 48/100, they have built in charge profile and protection settings, do they not? Won't the Multiplus be conflicting with the inbuilt battery control? Also you didn't mention the first connection of battery to inverter via a protection resistor, maybe that's in a previous video?

[@robo2901]

I noticed you skipped the UPS function on the grid tab. I seem to remember reading somewhere that this was a good one to disable with LifePo4 batteries. Any thoughts?

[@mb106429]

If these inverter chargers were designed correctly you should just be able to connect to them with Bluetooth and do this with your mobile phone, you can set up their DC to DC chargers from a phone through Bluetooth but these multipluses are expensive to buy and then you have to buy extra boxes at 200 quid a go in order to get them working!

[@EvoCarl]

They do a version with the GX device inside (Multiplus 2 GX) for a all in one setup, think I still prefer separates in case something fails.

[@john0270]

Yeah their charge controllers are brilliant but... have a multiplus and the mk3 cable on order.... just about bought the Bluetooth dongel, thankfully after allot of Google searching I found it is absolutely useless for programming. It should have bold letters on it NOT ABLE TO PROGRAM MULTIPLUS!!!!!

[@topnotchit]

Hi! It seems the SOK kicks in the CMOS when absorption 14.6. It cycles CMOS on and off for 15m before going to float. Is this the desired effect or is 14.4 a better absorption value for SOK batts?

[@harold-miller]

This is perfect! Exactly what I need to know for my MP2 installation. Have you all used the Smart Dongle with this? I was curious if I could adjust the input current limit with the app rather than having to purchase a GX or the other Victron panel.

[@CurrentConnected]

Not sure, but stay tuned, I'll get some dongles ordered and test it / show on video if it's possible.

[@busbytes]

You can change input current with the smart dongle

[@johnlarkins5664]

Great video! I have 4 Renogy 200 AH deep cycle lithium batteries. Do you know what the program info is for the multi pass 2 3000? Thx!

[@bmgm37]

Would you recommend those same charge and absorption settings for 4 DIY Lifepo4 280ah batteries built with EVE cells?

[@theecstasyofgold7286]

For two of the 206 ah 12 volts wired in parallel, should absorption time be 15 minutes, or 30 minutes?

[@mikenavy360]

Wanting to do the switch to to multiplus 11. Sometimes I might want to charge with a small 2000 watt generator. Would I need to check the weak ac input?

[@peterpulpitpounder]

Greetings. I'm wondering if you can explain the "Float" charge setting of 13.8, and how it actually works (or doesn't), when permantly hooked up to, as in my case, a pellet stove. I have my inverter/charger, with transfer switch, plugged into the wall at all times while hooked up to my lifep04 battery. So it just sits there activated and unused until, of course, the power goes off. Okay, so is this float charge active at all times? Can it do any harm, especially if the battery just sits there? I'm confused a bit on this matter.

[@deumerguy]

very well explained, thanks. I install a multiplus II 5000/48volts/70amps (right now with 32 used truck batteries 12 volts 225 amps). - I will buy lithium batteries in 2 or 3 years- What do you recommend to put as upper and lower voltages limits for bulk, float,.....-- (i do not perfectly understand this..) Nb1 It will be loaded with 30 sun pannels 550 watts peak. NB2 I is off grid (used for EV's loading + some of my main electro consumers...). I tested those old batteries (from 12.9volts down to 12.0 they give me easilly 0.6 kwhour back) So time 32 is about 20 kwh available at night . Thanks guy

[@JDVideoProd]

Would Battle Born batteries have the same settings as the SOK batteries. I have 4 - 100 amp hour 120 v batteries in parallel.

[@robd6709]

Can you add a VE.Bus Smart Dongle to this inverter and have low temp charging control in case you have cheap Chinese batteries without built in low temp protection?

[@davefoff]

So what settings/configuration can be done with the Victron Connect PC App?

[@jimmyupton5507]

Thank you for this most informative video. Where can I get the specific information for Lead batteries? I have 4, 6 volt batteries. Thank you.

[@mrmotofy]

Look up the charge specs from the manufacturer. Generally Lead open cells are 14.8v charge, float 13.5v equalize 15.8v, sealed are generally 14.4v, 13.5v and no equalize.

[@dmiller9786]

Can the Multiplus II charge batteries from a 120V source (generator or 30A shore power)? The specs give an AC in range that only covers 240v.

[@pete4778]

Is this unit a split phase 120/240 pass through, I want to use this unit to supply my house sub panel 30 amp. After the batteries are cut off will go back on the main power AC. So I will need to connect both ac in and ac out L 1 and L 2.

[@ChrisJones-je7nm]

What was the main cables called and size from the battery to the inverter please

[@andrewborntrager7909]

Thank you for the video. Could this also be done using a cerbo gx over Bluetooth, without the adapter?

[@CurrentConnected]

No, you cannot do any inverter programming over bluetooth. With a Cerbo-GX however, you can connect it to VRM Online Portal and program through there.

[@whatevah666]

Can you use this program with an Cerbo GX (or at least do the same stuff with it?) or do you have to use that usb dongle ? Cost of this systems starts going bananas with all the addons you gotta buy to control it in different ways i think :)

[@carllennen3520]

Did you ever get an answer for this? I have the Cerbo GX, and the Bluetooth dongle, but not the USB dongle. I didnt know I needed it. Can I do this with the Bluetooth dongle, or through the Cerbo?

[@cujo7240]

There a couple of settings I may want to change from time to time, like battery charge amperage and dynamic assist. Is there a way to change these using the Victron Connect App or Cerbo GX Display interface or perhaps the VRM Monitor website? I have the ability hook up my laptop using the MK3-USB unit, but it would be nice to make these mods without having to tote around my laptop every where I travel. Thanks

[@raystone4673]

Good slow close-ups at start, clear sound, most KZbinrs dont do either of these well, or skip details of one part.

[@daemocd]

Nice video. Is it 3000W per 120V port or the 3000W output power is divided between the two?

[@CurrentConnected]

Divided between them...But out-2 is only powered when shore power is available, so thats not really fair to say because they can feed-through MUCH more than 3000w.

[@MrOSUMike1]

I added solar to my Victron multiples 2 set up. I have Li Pro Fe batteries 400 amp hours. the multiples shows AC input correctly and charges correctly. It shuts the investor off while the solar stilll has the batteries charged. help me program to take care of this problem. Thanks Mike

[@benjaminschmidt586]

Muss man zwingend mit der DC Versorgung die Einrichtung durchführen? Man kann also nicht direkt die 230V zuschalten?

[@nomadicskyler]

I am plugging my shore power in and I just get a mains on blinking on the inverter, I don’t know why the charger won’t work any longer

[@solarcharging9743]

Is this a high frequency, or low frequency unit?

[@phatmusic]

I have the sok 24v 100ah batteries, can you give those numbers for the 24v batteries please?

[@brieninsac]

I have the same inverter. However, I've never been able to see L1 and L2 separately via VictronConnect or the Cerbo GX. I don't know the firmware version, other than mine was one of the first units sent to North America. My installer has been hesitant to install the firmware update as there have been reports of excessive noise, where mine is quiet as a mouse unless there is a heavy load on it. Is there a setting or something I need to do to see both legs?

[@nathanpearson7175]

I had this same problem. No even victron could help me. Finally . Another KZbinr told me how to achieve this. In update feeds- select - latest release candidate- then do a firm ware update and you will see L1 and L2 - this is done on the touch 50 screen

[@grumpyshorts1056]

Looking for a solution... as my Multiplus II like this one, trips my storage GFCI 110v outlet, when I plug in while in storage.

[@dominiqueeybers9186]

Can i use any usb to com rj45 or must it be victron

[@christsitouridis2213]

Hi thank you for the video. Can I connect the multiples ii on a switch and from anothe port of the switch connect to the usb adapter and of course the usb to the computer ?

[@CurrentConnected]

No, this is a VE.bus signal, not a ethernet network signal. you can only connect the VE.Bus to the victron devices. Each device has 2 ports, so you can daisy chain them.

[@FOCUSPRODUCTIONSUS]

Can you program the same way you just showed on the multiple plus 2 with a victron cerbo GX ??

[@nichburns1424]

Did anyone answer this? I have the same question

[@NikolasProtopapas]

Yes you can need to enable two way communication > device list > remote ve configure

[@blackpepe]

no you can’t, cerbo is useful but it’s shit all for programming the multiples outside of changing input limit

[@DenaBrock]

So as I was following the pictures from your video and instruction at the end it told me virtual assistant was on In your video you did not uncheck that box and I assumed that was just a default. Do I have a problem? When I clicked show me where it did not work to show me I believe it loaded AlSo we want to practice making changes while we have our windows here Do you have a video to link for that

[@CurrentConnected]

Hi Dena, great question. I think you mean virtual switch, not virtual assistant. I suggest unless you know how to use virtual switches, then just set the option to "do not use virtual switch", and on the assistants tab, you shouldn't need any for normal operation.

[@markdavidson6321]

Why is it recommended to use more than one battery? Wouldn't the inverter load determine the total amp hours needed from the battery bank? Just trying to understand that recommendation

[@CurrentConnected]

Yes, but in the case of the SOK battery, each battery may have plenty of capacity, but you can only discharge at a rate of 100a, which means approximately 1280w per battery (100a * 12.8v). This means to power a 3000w inverter, you need at least 3 batteries to meet the demand, otherwise you must derate the inverter to prevent overloading the batteries.

[@stoomheier]

Wonderful piece of equipment, it only makes a terrible buzz 24 hours a day. Like an old tube light.

[@CurrentConnected]

Refer to our video on firmware updating, it fixes the buzz.

[@stoomheier]

@@CurrentConnected That is not true! I updated from 481 to 490 it did not make any difference. So what is the reason that it makes the buzz? (mp2 48/5000 from feb 2022) kzbin.info/www/bejne/lWPNepl6pdyDoK8

[@stephenkozlowski8666]

I purchased this 2x120 Multiplus from you. Do you have recommended settings for the Epocch 460 ahr battery?

[@CurrentConnected]

This would be best to get from Epoch battery - they may even have recommendations for CANbus communication.

[@stephenkozlowski8666]

Thank you

[@kwynton8272]

Witch setting do i need to adjust if i only want to charge the battery at charger only and at the same time keep letting shore power go through the invertor

[@CurrentConnected]

Turn the power switch to the other direction, instead of position "1" go to position "2", or select charger only function within a Cerbo-GX or Digital Multi Control.

[@curtisedie4280]

Isn't it bad to let your batteries discharge bast 12 volts?

[@johncumming2961]

Is it possible to do this configuration with the Cerbo GX and the GX touchscreen rather than using the Victron USB interface and laptop?

[@CurrentConnected]

Yes, through VRM online portal using a web-connected Cerbo.

[@nolangen542]

@@CurrentConnected I used the cerbo GX/VRM as you say and was also able to upgrade the Multiplus latest firmware. I had to borrow a PC to do it - as it was not Mac compatible

[@adassociates8235]

Will (2) Victron 48v 5000w inverter split phase be able pull over 14kw loads?

[@carlosreyes6448]

No thats 10000va, which equals to 8000 actually watts.

[@Elites-asthetic]

As anyone tried using the ve bus and the digital control panel together Reason I ask I was told it’s one or the other

[@LouCetrangelo]

When I set my Multiplus absorption voltage above 14.2 my 150/85 smart solar MPPT goes into over voltage error when the multiplus is in absorption mode. RV Setup: Three 206ah SOK's with bluetooth bms, in parallel, Victron multiplus 12vdc 120 vac 3000va, Color GX, BMV-712, 150/85 MPPT, 100/50 MPPT. Float and battery full settings at 13.8 vdc. Max charge current set to 120 amps. After 1 hour initial multiplus absorption two batteries are just over 14v. One is 13.7v. The reason it goes over voltage above 14.2v is that a voltage spike occurs when the battery bms cmos shuts off. One of my solar charge controllers is sensitive to this and goes into the error condition shutting down. The battery bank does not completely fill from the multiplus at 14.2 absorption. I have the MPPT's absorption set to 14.8 so there is a chance it will fill and balance out when off shore power. Is there a solution.

[@vanholt6193]

I am having the same problem you are, what did you do to fix it?

[@LouCetrangelo]

@@vanholt6193Too long to post here. Please message me on Facebook.

[@mrmotofy]

These inverters are spec'd as 3000VA NOT 3000w. That's a difference of about 600w or so. 3000VA is about 2400w I believe

[@CurrentConnected]

It depends on the power factor. At a power factor of 1, 3000va = 3000w (resistive loads)

[@youtubemusic2700]

The resistance in a DC circuit is pure resistance, which is limited to the impedance (measured in ohms) of the conductor(s). Thus, watts are a good measure of “real power,” and if you have three 120 VDC devices calculated to work at 200 watts, 400 watts, and 600 watts respectively, then you can just add them linearly to know how much power the circuit requires, which would be 1200 watts (1.2 KW). In contrast, AC circuits also have inductive resistance, mostly caused by the build-up and collapse of the current with every 60 Hz excursion of the sinusoidal wave. This means that depending on their respective amperage requirements, three 120 VAC servers rated at 200 VA, 400 VA, and 600 VA respectively will not necessarily add up to 1200 VA (1.2 KVA). In sum, “volt amps” is a warning to proceed with caution. You created a very good video that I found very helpful, however, you cannot use watts and volt-amps interchangeably. You should use the term that Victron use to rate their inverter Volt-Amps

[@terryward162]

cOULD YOU CONNECT DIRECTLY TO COMPUTER ETHERNET PORT? dOES THE INVERTER HAVE IP ADDRESS YOU COULD CONNECT TOO? tHANKS

[@bobmakowski7627]

So I recently just bought one 206 amp hour SOK and your telling me I shouldn't use a Multiplus II with just that one battery?

[@CurrentConnected]

I would use a bare minimum of 2, 3 recommended.

[@bobmakowski7627]

Ok understand thanks

[@mustafaabdalla1779]

I replaced victron batteries with new batteries.. inverter doesn't start or run ..

[@carlosreyes6448]

Can you program. Two at the same time. I'm looking into buying two. And useing them in a split phase configuration.

[@CurrentConnected]

Yes, we have a newer video on split-phase programming.

[@carlosreyes6448]

@@CurrentConnected so, I do have another question. I am very interested in purchaseing two for split phase. And I'll be connected it to my houses. Breaker panel. Not sure if it's bonded or not. So if it's bonded do I have to remove the bonding bar? In order to connect to ac input?

[@CurrentConnected]

@@carlosreyes6448 No, just turn off ground relay in the inverter and use the existing bond - unless however, you are feeding a subpanel, then you would need the relay enabled.

[@carlosreyes6448]

@@CurrentConnected okay, I really appreciate your help. If I order from you guys. Can y'all program, the inverters for me?

[@CurrentConnected]

@@carlosreyes6448Yes, absolutely. Best to send us an email or give us a call so we can make sure all the specifics of your install are covered.

[@gregoryvanderbeck2253]

I can't get to the veconnect software, the sites all say they time out!!!!

[@CurrentConnected]

That's very strange! This link should take you to the page on Victron's website that has all their software for download: www.victronenergy.com/support-and-downloads/software

[@bradpennington4778]

I have the same inverter but my screens do not look the same.

[@CurrentConnected]

Hi Brad, are you using VEConfig program, or VE.Bus Config, or VE Quick Config, the other two software packages that are included from the download link? The proper one is VEConfig

[@nebulight]

floating at 13.8 seems a bit high at 3.45v per cell.

[@CurrentConnected]

In my testing, if you fully charge / top-balance a cell at 3.65v, after resting for 24 hours the float voltage for a healthy cell is right at 3.45v. The thought process is that if this is the resting voltage, then if you float at a lower voltage, you are partially discharging the battery already, even though the charger function is on and operating.

[@MikeJordanUnCamplicated]

Thats what I'm thinking. I don't have an SOK, but any LifePO4 I have used, lives at 13.6v FSOC unassisted by a charger

[@TheJsmharley]

So where is the VE Config for Macs?

[@CurrentConnected]

Probably best to spin up a virtual machine or borrow a friend's windows machine.

[@marcsmelser9508]

@@CurrentConnected Victron has the victron connect app for the MACs. Once you connect the USB dongle additional menu items show up that allow you to do the programing you see in this video. The layout is different, but everything talked about in this video is able to be set using a MAC, you do not need a windows VM. I just did this today.

[@simon359]

Still waiting for the Mac version or Apple version?

[@CurrentConnected]

Both available! www.victronenergy.com/panel-systems-remote-monitoring/victronconnect

[@simon359]

@@CurrentConnected I already have that, and it won’t change my inverter settings.

[@CanadianTexaninLiguria]

Like Victron couldn't have just made USB to USB, skipped the CAT5 altogether

[@grantwilkinson8147]

i love how close people fingers come to touching both the +-..... just saying..

[@HighTechLab]

At 12v DC you could touch both and nothing at all would happen. If you were wearing metal gloves though, different story.

[@TravelExplorer2040]

Not work on mac

[@gregseggewiss694]

wish they had a Mac version

[@HighTechLab]

They do, refer to Victron connect

[@dodgefreak8797]

If the damn USB dongle is necessary why don't they just include it.. 😒

[@CurrentConnected]

Not needed if you buy from us, we do the programming for you.

[@PavolFilek]

DO not charge LFP to 14.6 V or 13.8 float, U will kill LFP, LiC6 and LiFePO4 + LiPF6 + DMC + EC + EMC do not need such high voltages. And tell me what storage and working temps fo U have at cathode and anode of LFP.

[@topnotchit]

SOK literally says 14.6v charging voltage on the side of the battery.

[@youtubemusic2700]

So does Big Battery

[@wipatriot510]

3000Va, NOT 3000W...

[@schlz69]

ITS NOT 3000 Watts!!!! its about 2400 Watts the 3000 is Volt Amps not Watts!

[@benjones8977]

Wish they would make one for IOS or Apple! I don’t want to have to buy Microsoft of anything and I don’t want to learn it! 😡

[@Patrick-zj1iy]

You can do all the basic settings from the victron connect app on Mac OS see video kzbin.info/www/bejne/bJ2rZKB8Z8iJl7s

[@crazywayne7051]

Victron's communication protocols are such a joke they have three different systems USB and their two proprietary delusionary connections. The fact that you can't just use a USB or a cat cable for everything to communicate which has been standard protocol for the last 30 years is just pathetic victron refuses to innovate just sticking with old outdated technology that just has other technology slapped on top of it that's why victron systems look like a a octopussy orgy with black and red tentacles not to mention their non-ul approved electrical connections on their equipment which has caused many issues but yet they refuse to acknowledge it. And pass it off as the user air their own information contradicts itself between their manuals and their website.

[@Bonaventure2AK]

I totally agree. I've seen videos where victron people don't understand all the protocols. Would have gone with another manufacturer if I had realized the connection mess.

[@amacmedia3221]

Im trying to do this on my macbook pro but it wont work, "You can’t open the application “VECSetup_A.exe” because Microsoft Windows applications are not supported on macOS."

[@CurrentConnected]

It may be that you've tried to install the Windows version of the software instead of the Mac version. This link should lead to the download for Mac - apps.apple.com/us/app/victronconnect/id1084677271?ls=1&mt=12

[@amacmedia3221]

@@CurrentConnected all sorted now, many thanks

[@digisketched7877]

Current Connected, I'll be hooking up the older Victron Multiplus 12v/3000 soon and was wondering it this video tutorial would essentially apply to me unit as well?

[@CurrentConnected]

Yup! There may be a slight variation or two in the settings, but it's essentially the same thing.

[@digisketched7877]

@@CurrentConnected Perfect, thank you so much for making this video, and for replying.