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smart solar set-up help

SmartSolar 75/15 not showing in app after firmware update

Hi everyone,

I opened the app today to check the solar and it asked me to perform a firmware update, which I did. All seemed ok, now when I try and access it, it doesn't show up, and the blue blinking light has gone.

Anyone got any ideas what's happened.

Thanks, Jamie

jamie-w asked
riaan-schoeman commented ·

1 Answer

Smart Solar fluctuating

I have a single solar panel on my van attached to a Smart Solar MPPT 100/20. Everything seemed to be working very well but today I switched my fridge on for the first time in a while an when I look at the Smart Solar app, I notice a massive fluctuation in the solar readings. It can swing from bringing in 1w to 150w and back to lower figures again within seconds of eachother. It never seems to settle at a steady rate.

Does anyone have any ideas why this may be? It didn't do that when everything was first installed and tested, but it's sat for a few weeks until turning back on today.

Any advice much appreciated. Thanks

thepiper asked
cemdev answered ·

3 Answers

Multiplus Compact. New set up blicks green and red then solid red only

Just wired it. New battery that needs charged but I am hooked up to shore power. Green and red lights blink then red alarm stays red and green turns off.

dickfingers asked
kevgermany answered ·

1 Answer

SmartSolar 100/20 MPPT, panels in series or paralel?

Hi all

I realize series vs parallel has been covered a lot, my situation isn't quite straight forward though so would appreciate advice.

I bought a camping caravan which came with the following 12V system.

1x 4KWH li-ion 12V battery

1x Victron SmartSolar 100/20 MPPT controller

4x 100W mono crystalline solar panels.

Panel specs

Rated max power 100W tolerance +-3%

Voltage at P-max 18.2V

Current at P-max 5.5A

Open circuit voltage 22.7V

Short circuit current 5.89A

Normal operating cell temp 47 +-2 degrees C

Max system voltage 1000V

Max series fuse rating 10A

Operating temp 40 – 85 degrees C

Application class A.

I want to permanently mount the panels on the roof of the camper but only 3 of them will fit, so my thinking is to permanently mount the 3 and then keep one loose which I can place out in the sun for example if camped under trees or on a cloudy day.

Option 1

If I connect the 3 panels mounted on the roof in series the VOC will be 68.1V and the current 5.5A which is still well within the limits of the controller. If I then add the 4th loose panel also in series, the VOC goes up to 90.8V which get’s close to the 100V max of the controller, this will also leave no room for a margen of 10% - 15% as recommended for fluctuations in temperature. Alternatively can I connect the 4th loose panel in parallel?

The big disadvantage to series connection in my situation is shade on the panels. At some or other points the camper will stand under a tree or get partial shade on the roof as the sun moves around, so I think parallel will work better.

Option 2

If I connect the 3 roof mounted panels in parallel the VOC will be 22.7V and the amps of the system 16.5A which is well within the limits of the controller. If I then add the 4th loose panel, the VOC will remain the same but the amps will go up to 22A.

From what I read inputting more current in to these controllers is fine as long as you don’t put in more volts, the VOC of 22.7V will be well within the limits so it’s only the 2 amps which will be out of spec and I guess waisted.

Is my thinking and understanding of these things correct and which in your opinion is the better option?


Nickus de Vos asked
ganlieber edited ·

6 Answers

Smart Solar for 350w monopanel


I would like to upgrade my boat and would like to buy a solar panel

I decide to buy a LG solar mono panel 350w for my boat

on my boat i have 2 bateries, maybe i would like to buy one more

they are all AGM

Now i am looking for a Smartsolar

but i dont now the size to buy or witch model ?

Can you please help me


ncrncevic asked
jordan-de-geus answered ·

4 Answers

why is my MPPT not charging?

So its not a system I installed, but one we had installed.

Our setup includes:
4x 210Watt solar panels
multiplus 12/3000smartsolar Mppt 100/50Cerbo GX
500A Smartshunt
4x 100Ah LiFePo4 batteries

So as I understand how it was installed, the Lithium batteries are supposed to be charged by the solar panels, and then they in turn charge the battery that came with my trailer (which is a lead acid). I had to do the programing to get it finalized, I followed the battery manufacturers specifications.

Our system worked for a while back in April, then it stopped out of the blue. Since then, I have pulled down all my panels to test diodes, all came back good. Followed the wires and checked all inline fuses, good. Checked all breakers, good, all wiring and connections labeled correctly and checked. Reset all components to factory settings, let sit for a bit and reprogrammed for my set up. Ran my batteries down to low 12v (12.2v), and nothing still. My displays and info all just say 0-1watts, 0amps and around 22-23volts coming in from my solar and stays in bulk. I am at my wits end right now.

I have gone through so many forum posts and have tried everything on here, as well as various other forums and videos. Below are some screenshots I've taken this morning. Please if you need any more information to hopefully get this resolved please let me know and I'll get what ever I can back here for the community to look at. We are currently on shore power as well to charge the batteries back up, so if anything needs to be done off shore power let me know as well. Thank you all!

*edit* forgot to include my settings

**edit 2: I noticed recently that my ssc battery voltage and my multiplus battery levels are reading differently, 13.5v and 14.3v respectively. Is this an issue as well? If so how do I fix this!










brian-lavoie asked
brian-lavoie commented ·

3 Answers

Integrating Windenergy to a Victron installation


I've been looking to integrate a SWT (small wind turbine) to my Victron Quattro installation and have some questions.

Is there a supported partner for integrating wind into a victron system? In my research i've found that the Bornay windturbines seams to be a good choice. Any one here that has some experiences with these units? What is possible to integrate to VRM for example?

It would be awesome if one could monitor the information from the windturbine on VRM.

What woud be best, AC-coupled (on AC-out) or on the other side (AC-in with a smart meter)?

If you (who are reading this) has allready integrated wind to a victron setup, could you please share your experience and setup?

Kind regards


ehsab asked
ponzoa commented ·

1 Answer

SmartSolar 100/20 Bluetooth

When I go to the victron app (android samsung) the controller is listed, when I attempt to connect it goes to 20% and then cannot connect.

I have disconnected the controller overnight, done a fresh install of the app and a factory data reset on the phone, none of which worked.

Any advice or suggestions welcome, I'm out of ideas.

tramp-truck asked
lehrling commented ·

10 Answers

why bulk at night

why would a 250/100 stay in bulk all night ? its dark outside...

kevin-b asked
Alexandra edited ·

2 Answers

Error 67 - BMS Connection Lost on Smart Solar 150/100-Tr VE.Can

I have a Smart Solar 150/100-Tr VE.Can connected by VE.Can to a MG Energy Master LV (With 2 x 200Ah HE batteries) and a Color Control GX. There is also a Multiplus 24/3000/70-16 connected by VE.Bus on the same system.

I'm having an occasional 'Error 67 - BMS connection lost' from the Smart Solar but I have unfortunately been unable to pinpoint what exactly is causing the issue. It never happens when the solar is isolated but randomly when solar is generating. It does not automatically recover unless I clear the issue by isolating our solar panels and reconnecting. Is this a known issue with Smart Solar VE.Can variants? Details are below. Many thanks!


DVCC Enabled

Smart Solar 150/100-Tr VE.Can Firmware v̶1̶.̶0̶3̶ v1.04

MG Energy Master LV Firmware v1.22

Multiplus 24/3000/70-16 (230VAC) Firmware v469

Color Control GX Firmware v2.51

jamesk asked
froste9 commented ·

5 Answers

What settings for 2x Sterling 140ah AGM deep cycle?


I have 60A Victron MPPT SmartSolar 150--60, connected to 2x Sterling 140ah AGM deep cycle batteries connected in parallel.

What settings should I put into the charge controller?

There is information in this data sheet, but nothing clear to a beginner:

I have got it operating using the preset "Rotary Switch Position 2", which was what the charge controller had as default perhaps, but I have no idea if that is appropriate. Worried I am harming the batteries.

Thanks for any help.

jodusno1 asked
wysiwyg answered ·

1 Answer

VictronConnect Does NOT See Solar MPPT 100/50

We have a new Bruder Expedition with a Victron Solar system installed. A couple of weeks ago our system completely shut down. We were able to get it back online but now the MPPT 100/50 does not show in VictronConnect. We've followed ALL of the instructions. Have unintalled the app several times, unpaired from bluetooth and connected from within the app as instructed BUT the MPPT 100/50 still will not show. Just the BMV-712 Smart. The MPTT 100/50 showed up in Victron Connect before the system shut down. We have even turned the system off manually and restarted it several times. We have tried running VictronConnect on an iPhone instead of the Samsung tablet (Galaxy Tab Active Pro, model SM-T547U) and no luck. Really at our wits end. We are not tech illiterate but this one is stumping us.

claminator asked
paul-cotton answered ·

5 Answers

Wiring of MPPT 100/20

Victron Setup.pdf

Hi there, I am new at this. Could somebody say if this setup is feasable or not? Any suggestions or comments welcome.

Thank you in advance.

reiner asked
Vance Mitchell answered ·

1 Answer

Smart Solar 100/50

I am using this app on my iPhone and my iPad can anyone please tell me why the below battery settings are grayed out and I am unable to get into change anythin. Any help would be greatly appreciated


jenray4 asked
jenray4 commented ·

1 Answer

2x 100/20-48v mppt for 4 panels or 1x 150/35

I'm dipping my toe into the victron world... I have roof space for 4 solar panels. I'm thinking 4xLongi 375W with open voltages of 41.1v. I was planning on using 2x 100/20-48v smart solar MPPT's and having 2 mini arrays of 2 panels. The roof gets good sun, but there is a tree which will partially block one panel later in the day.

Am I better with a single 150/35 mppt and wiring the panels up differently or even just having 3 panels in series not bothering with 4th?

My thinking might need correcting...

I weighing up whether 3 panels in series with an open circuit of 120ish volts will operate the charger longer for a 48v system than 2x2 panels with a max open circuit of 82v...

Also, by separating the panels on separate MPPT's and strings do I protect against the panel which gets shaded from dragging down all 4 panels if compared to them being on the same string/MPPT.

cost wise there doesn't seem to much in it.. Or is there a better setup entirely.

The system will be feeding...

Multiplus ii 3000VA 48v

2.4kw 48v plyontech battery (intention is to add more at later date)

Cerbo GX

It will be grid tied.

Really would appreciate some guidance

Many thanks.

ramblinglamb asked
Murray van Graan commented ·

2 Answers

BMV & SmartSolar Streetlight to warm battery box

Hi, I have a 190ah LFP battery going in to an ammo can which will be in my truck bed. I'd like to heat the box using small ~25w heat strip(s) when the battery is too cold to charge, but only if it was going to charge in the first place.

What I mean by that, is that if it's the middle of the night and below freezing, don't bother because there's no sun to charge with anyway. Similarly, if I have a foot of snow on the panels and it's freezing outside, don't bother because the panels might not even produce enough voltage to initiate a charge cycle.

I was thinking some combination of the street light function, load ouput, and BMV low temperature relay setting could accomplish this. Likely easily with the ability to invert the streetlight functionality but I do not think that's possible from my research. Maybe some NC relay that the streetlight triggers when it'd normally be operating an actual streetlight (night?)

Any ideas appreciated!

hour asked
Paul B answered ·

1 Answer

System disabled with update

I have a victron system in my newly outfitted van. I was attempting to connect to the app for the first time. The app wanted to run an update which disabled my system. However the system is still down and I have no electricity - lights, water pump, router/modem - nothing is being powered. Does anyone know how to get my system back up or what caused it to completely stop working? Thank you!

jnb787s asked
Kevin Windrem answered ·

1 Answer

MPPT 100/30 installation orientation

I want to mount the controller with the wire terminals on top, this also also allows the led's to be

visible. The unit is to be mounted in a tool box with an ac/dc charger to maintain two Li-on

batteries for radios. Is the only issue keeping the fins vertical and free and clear for good air


dale asked
wkirby answered ·

1 Answer

Low temperature cutoff not working

I have attached a temperature sensing cable to my BMV712 and it is reading the temperature off the battery. I have connected my mppt 100/30 through networking to the bmv and the controller is receiving the temperature. The controller is set to rotary switch 7 for my LifePo batteries and the low temperature cut-off is greyed disabled but showing 5c as the documentation says. However it is NOT stopping charging as I have tested this down to 3c. This is a VERY important feature for me as I live in the mountains of Colorado and we get cold. It is NOT working. Please advise.

hankhatch asked
fpoet commented ·

0 Answers

Load output - Enable only when charging

I'm going to be putting a spare 75/15 MPPT charge controller in a small pelican case with some small circular vents. I'll extend the PV input and battery connections to be panel mount jacks on the outside of the box, so that I can charge up two portable battery packs (separately, of course).

I'd like to run a tiny DC fan in the pelican case to draw air through the vents, and I really only need this to occur when charging is occurring. The fan will draw extremely low power but I still don't want it to operate continuously in case I forget to unplug things when night rolls around. I'd prefer this to some temperature controller... is it possible? Not sure basic load output nor streetlight function would give me the ability.


hour asked
xmd answered ·

3 Answers

What Isolater / breaker ?

I am using 12 x 320Wp solar panels, devided into 2 strings, each 3 panels in serie 2 in paralel.

All connected to a Victron Mppt controller 150V/85Amp. The electrical code states that all incoming wire to the Mppt controller have to be secured. What type of breaker is best and what characteristics do I use.



vfan asked
seb71 commented ·

0 Answers

Parallel 2 identical MPPT 100/20 and solar panels systems to a single battery bank

Hi. I have a 4WD vehicle that while travelling has a limited available roof space because of wind drag. So I wish to mount 2 x 130w panels in series facing upwards with a 100/20 blue tooth controller (SCC110020060R), which in most cases provide required charging of the battery bank, I used the Victron Calculator to confirm controller size. I wish to mount a sliding identical system below on rollers so that when the vehicle is stationary and possible partly shaded to the sun the lower system can be rolled forward to increase the charge to the battery bank when required.

Some possible extra information that may be useful;

1. I like to have some redundancy IE the completely independent system should panels or controller fail whilst working remotely.

2. The battery load is not connected to the load terminals of the controllers but via a separate low voltage disconnect device.

3. The controllers may need to be fan cooled because of the possible ambient temperature within the 4WD in the summer time 50C +. This can achieved simply by mounting the controllers to a common aluminum plate with a bi-metal plate type switch and fans


1. Will the 2 SCC110020060R synchronize / work together to charge the single 12v battery bank?

2. Do I need to change the controllers to a single 150/35 (SCC115035210) as the calculator suggested for 2 x 2 x 130w panel system.

3. Can I have battery bank temperature sensor on the controllers? Comment 3 above.

Thank you in advance for your advice

banjupb asked
dazey77 answered ·

1 Answer

Victron 100/50 + Inverter Wiring Setup Help?

Hey guys, this is the very simple setup I intend to run in the coming weeks - can you please help me with the following:


1. Should I have a circuit breaker (as depicted)? And/or, any other protective devices in the diagram - and if so, what type/rating?

2. The system will be contained within a car for 85% of the time, I assume I should Ground the Inverter and MPPT to the vehicle (wherever I can find good contact). Though, the other 15%, it will be completely standalone at a campsite without being grounded...which I assume is the case for many setups?

3. The Panels come with some 12 Gauge, I assume that's fine to run there on? 4. ...anything wrong with the setup, improvements, suggestions?

Many thanks in advance - I really appreciate it (particularly @seb71 for getting me on the path :) ).

peterb381 asked
weissnat edited ·

3 Answers

Automatic Equalization not available



I’m trying to finish setting up my first system and can’t get the automatic synchronization option to work on my 100/50 MPPT SmartSolar controller. I’ve tapped it a hundred different ways and it won’t let me access the option

any idea why it’s not available? Screenshots attached

outerspacemannn asked
jperez (Victron Energy Staff) answered ·

1 Answer

vcsf file with my SmartSolar 100/20

How can I open a "*.vcsf" file the history of my Smart Solar 100/20. With a previous version, the software produce a *.csv file and it was easy to open with Excel.

What is the solution now?

Best regards


bigdata29 asked
friaras edited ·

3 Answers

Set generator as running when AC1 is active.

Hi folks,

I have AC1 set as generator input and it works as expected, bar for a limit addressed on another post.

I would like to track generator run hours but I do not have auto start set up yet as this involves a modification of the generator.

I currently start and stop the gen manually, which works for me right now, and would like AC1 to set the generator start and stop flag which would then log run hours for me.

I apriciate that its litterally the reverse of what would typically be required.

Is this possible? If not is there any way to build and run a script to make it possible? Could I build a custom helper of example. or is there perhaps a helper that runs script?

Multypluss 48/5000/70 & CCGX.



Alistair Warburton asked
Kevin Windrem edited ·

4 Answers

100/30 MPPT solar charger

I have 2 170watts panels on my RV roof, and 2 100 watts panels on the ground. The total watts is 540. Can I use the 100/30 charger if I connect the one's on the ground in series in one string and the one's on the roof in one string. And then parallel the strings together and then into the charger? Or do I need the 100/50 charger?

sunshine1 asked
sunshine1 commented ·

4 Answers

Power Difference between values shown by Smartsolar and Smartshunt (Battery Monitor)

There are huge differences between the Values I get from the MPPT and the battery. Everything is luke warm to ambient temperature. Cables are not an issue - they are total overkill.
The Smartshunt values are independently verified by a very good BMS.

Anyone can shed some light on the situation for me?

Power Solarpanels: 34.07V * 13.4A = 456W

Power Battery: 27.27V * 16.30A = 445W

MPPT efficiency loss: 2.4% That's ok


Meanwhile, the Smartshunt shows verified 407W!!

Where are the missing 38Watts??


I am using LiFePo4 at low C rates - so round trip efficiency is virtually negligible in light of the losses I am trying to figure out.

Update: I've measured everything, thank god that I've the equipment for that since values vary in the milliseconds.

The only thing that does not match at all is the purported Solarpanel amperage output. Voltage seems pretty accurate. As such 1.4A were reported, when there were really 1.1A. A 21% difference!

That makes me really fed up and unless that is my specific unit I am gonna make sure that other people will become aware of the kind of product they are really buying.

But that doesn't explain everything. The only thing certain is that there are no real physical losses present.

lorenzo asked
francesco answered ·

6 Answers

Help look over Multiplus 2 schematic - Reward

Hello everyone,

I need someone, who is very experienced with the Multiplus2, PVs, lithium Ion battery and Grid Connection, to look over my schematic in a zoom Meeting. I will give you 10€ as reward. Someone, who speaks german would be good.

Cansin Sari asked
Matthias Lange - DE answered ·

2 Answers


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