Does the MPPT 150/35 Controller have Over Voltage protection if the Max input is over 150?

Hello, I have a Victron 150/35 MPPT controller, and 7 x 100 Watts panels in series, the panels OCV is 21.6v The Victron app shows at peak hour a max of 135 volts input since is a 150v max can I add another 100 watts panel same as the other 7 and will it exceed the max, will the controller shut down if it does?

Here is a basic description of the system.

7 x 100 Watts HQST-100D-SS (older model) newer model have a few different specs.

12/2 x 25' of marine wire from panels to MPPT.

Victron 150/35 with BT adapter.

5kW LiOn battery at 36v

Would like to add another same model as the other 7. Will it be better/safer to change configuration to 2 parallel strands of 4 panels each? Thanks in advance. asked commented ·

3 Answers

Why is vrm charts smoothed?

edit post to clarify.

1. VRM shows useless presentation of data.

2. Short peak data is not even in the raw excel data.

for problem 1. See the picture of SOC over a month Periode.

when looking at this you think the all charges goes to 99-100%?

but they do... where ever you zoom in, will show the same as picture 2.

Beside that is a problem that the system really not catching peak loads for analyzing.

question is for Victron... as its not a support question, but in bug categori..



Rune Eilertsen asked
Rune Eilertsen edited ·

1 Answer

Bulk, absorption & float observation & suggestion

Now that I've got the time to study the 150/100 controller with the graphical interface, watch it's performance & customize settings, I'm wondering now why there's even a need for multiple algarhythms?

When I had it set from the rotary switch it seemingly intuitively charged the expected amount of time in bulk & absorption with float kicking in near the expected tail current.

But now that I've only changed the charge voltage from 28.8 to 29.0, when it reaches 29 v it bypasses absorption & goes right to float with about a 30 amp tail current. That's not charging efficiently like that.

Wouldn't it be less complicated with all the algarhythms choices, that it just worked like any car battery charger that just goes full blast until it reaches a determined tail current then goes to float?

I'd like to know what if any, are the character differences electrically between bulk & absorption? It doesn't seem to me that absorption is really all that necessary since my understanding is the batteries need to get as much amps going into them as possible til it hits the predetermined tail current. Am I off on this?

Would love to get a better understanding of these relationships, a better grasp understanding the algarhythms & how I can set the controller to use absorption til it reaches it set tail current.

Bossrox asked
billknny answered ·

1 Answer

Can the SmartShunt get (STS) info from a Multi using DVCC?

Does the SmartShunt's SOC calculation need it's own independent temperature sense lead, or can it produce the same accurate SOC using the MultiPlus temperature lead with (STS) enabled?

I have Multi 24/3000/70, CCGX, 2 x MPPT 100/30, 530Ah PZS FLA batteries. Shorepwer, On a barge, with no other DC loads. (This is separate to navigation / starter battery system)

I currently use a Smartguage for accurate SOC and set the relay output to shutdown the Multi with assistants (only in case of a low SOC emergency). I'm about to install the two MPPT's, and have been adjusting the Multi's SOC parameters in VEConfig to mirror the Smartguage as closely as possible, but it's never that good.

If i get a SmartShunt I can use Ignore AC more accurately with its SOC, but if possible i'd like to use the midpoint monitoring function, rather than use another temperature probe on the SmartShunt, unless the SmartShunt's own temperature probe is needed for the most accurate SOC calcs?

Thanks Al

Al asked
billknny answered ·

2 Answers

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/Simpbms/Tesla Setup Van build


Starting a new van build and have some questions regarding battery setup.

I have 1 Tesla model s module (might upgrade to 2 in the future), I'm using Victron Buck boost dc dc 100a for alternator charging and a Mltiplus 3000w inverter.

For BMS I want to use the SIMP BMS together with a Victron gx type, this is where I have some questions and in need of some tips.

Anyone in here that uses a similar setup? Experiences?

Do you use contactors, precharge contactors as fail-safe system or Victron battery protect?

Current sensor via simp bms or victron battery monitor?

Charge enable/disable for temperatur high low, any way to trigger a heating pad?

Anyone tried simp with the cerbo gx?

A lot of questions here. Not much info on the simp bms/victron setup.

aasgardvidar asked
stxShadow commented ·

2 Answers

Cerbo GX Stock Availability in USA

Is anyone aware of USA stock of the Cerbo GX at all ? Seems Victron is way behind on manufacturing.

rbreding asked
Rob Fijn answered ·

2 Answers

AC output issue Multiplus 12/2000

Hi, I seem to be experiencing an issue on the AC side of my Victron Multiplus 12/2000 Inverter. It utilizes 400W of Solar PV, the MPPT 100/30 Charge Controller, a 200AH lithium battery bank and a lot of wiring components in a frustratingly confined compartment. I have combed through the system referencing the design from Explorist.Life ( I used, have tested for shorts, faults, polarity, circuit continuity, OCPD integrity, tourques, voltages (34VDC from solar, 14.4 between battery terminals and busses, 120VAC from distribution panel) and nothing seems out of sorts to me. The DC side of the system appears to work fine, but I am stumped as to what could be causing the inverter to throw an error every time I turn it on, and why it will not produce any AC output to distribution panel.

Has anyone experienced a similar problem? Have I overlooked something obvious? Any advice appreciated.

Here is a short video I made for an overview of the problem:

zamigill asked
ejrossouw commented ·

4 Answers

Trigger a dump load when your batteries are full (opportunity loads)

After browsing the docs and this forum for a while I’m still a bit puzzled about the fact that Victron doesn’t provide an easy way to manage opportunity loads. In this recent video it is said everything should be possible, but I couldn't find any information about how to do it. There seems to be no specific webinars in the professional portal.

lucode asked
Phil Gavin commented ·

3 Answers

Switch from solar to AC charging when batteries are low

I am getting a houseboat which has two small solar panels but nothing in the way of land/AC connections, and I would like to charge the batteries with AC/220V when their level is too low while using solar energy as much as possible.

The load is relatively small, mainly a fridge and the lights. There are two separate batteries for the engine starter and the rest.

Is there such a system that would charge the batteries while making the switch between solar and AC source automatically?

trougnouf asked
trougnouf edited ·

1 Answer

VictronConnect App won't start since last update (11.09.2019)

Since the last update at 11th Sept the VictronConnect app won't start, but before that it worked as expected.
The splash screen comes up then it exits.
I was suggested to remove and reinstall the app and reboot my phone but these did not solve the problem.
Phone is a Huaweii P8 Lite.
Any suggestions?

If you need logs or anything, just tell me where do I find them and I'll send it.

Thank you in advance!

Best regards,

Lazlotabor asked
rapiti commented ·

5 Answers

Batteries discharging during day?

How do I stop my LiFePo4 battery from discharging during the day when plenty of PV power is available? I understood the benefits of self consumption to be storing excess power in the battery for use when the sun is not shining

I have two Multi 48/5000 in paralell , Venusgx , 6kw pv panels, smartsolar 250/100 mppt and 10kw Freedom Won lithion battery

Edgar Evans asked
ejrossouw commented ·

2 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

Is it possible to install the temperature sensor on the negative pole?

Hi. Following case: I’m building a lithium battery with Thundersky cells. On the plus pole there will be the bms (ecs lipro).
For my BMV-712 I need to install the temperature there are two points I’m not happy with.

First, the temperature sensor is quite big, so maybe I’m running out of space ;)

Second, because it is not an active balancer the bms turns power to heat, so I think the probe would not provide valid data.

So my question is, could it be a possibility to install the sensor on the negative pole and just use the black wire to the temperature input on the shut? Another wire would deliver the +12V to the shunt...

thank you for supporting me!

Yours, Christian

Christian Lindermann asked

0 Answers

Need help connecting negative battery cables to BMV-712 shunt with two 12v RV batteries in parallel.

I'm installing a BMV-712 in my RV. I have two 12v batteries connected in parallel. I was going to connect both battery negative wires to the "Battery" post on the Victron shunt. But, the quick start guide shows the negative wires from each battery going to opposite sides of the shunt. The quick start guide referred to the second battery as a starter or auxiliary battery. In my case, it's neither of these. My question is do I connect both negative battery cables to the "battery" side of the shunt or one on each side of the shunt?

bertschb asked
LKLMEnterprises commented ·

1 Answer

Configuring Phoenix 24/3000 inverters for parallel operation


I'm planning to install a pair of Phoenix 24/3000 inverters for parallel operation and not finding enough detailed documentation on the configuration process. I've already got one of the two inverters on line, remote control via CCGX, VRM portal is working, bidirectional comms are working, I can do the config file download/upload thing, VEConfig 3 is installed on my computer.

I'm also aware of the need for firmware matching (read all the posts on that, especially from Phil Gavin)

Can someone please point me to the actual documentation for these configurations? There's supposedly a video but Victron says you need an installer account to get to it.

I just need the info on how to put the configuration to each inverter, and maybe a schematic of what Victron expects for per-inverter circuit protection. I'm planning on a 30 amp two pole circuit breaker at the output of each inverter before they are joined but it would be nice to see this confirmed in Victron specifications.

The VEConfig app contains absolutely no mention of paralleling. Perhaps the features are hidden unless there are actually two or more inverters present in the system? That's understandable if so, but completely undocumented.

All the docs I've read claim to contain all the details for configuring parallel and three phase modes, but fall short of actually doing so, or just point a finger at another document. Or they end up saying "this is too complex for the end user. You must hire an installer to do this".

True, parallel and multiphase AC system are complex but the rocket science is already in the blue boxes. I've spent my career building complex power systems and written the software for them including paralleling inverters and all that. I know the science behind this. I should not need to hire anyone to do it for me.



Chris Barber asked

0 Answers

North orientation vs east/west split

I have a choice of either mounting my array on a north facing roof with a single mppt or as a east/west split with 2 mppts, my question is which scenario would give me the most charge throughout the day? I have been told that north only gives me about 4 hours in the middle of the day at peak angle where as east/west gives more overall hours throughout the day as the east gets the morning sun then after midday the west takes over.

Dan.H asked
Alexandra edited ·

4 Answers

Strange charging behavior, limited power with Pylontech


My system consists of Pylontech US2000B Plus 2.4kWh Li-Ion Battery 6 Modules, Quattro 48V/8000VA/110A-100/100/230V, SmartSolar MPPT Charge Controller 250V/100A-Tr with Pluggable Display, Venus GX and 16x Solar Panels ERA 400W PERC Monocrystalline 24V.

The panels are connected in 4 groups of 4, Then into 2 groups of 8. These groups of 8 are independently switched.

I have a strange situation with charging, I never seem to reach any more than about half of what the panels can produce. So I switched off all the panels until the batteries were at a 30% SOC then waited until the sun was at solar noon. Then I switched on one group of 8 and the charge controller display gave a reading of ~2500w. Switching of this group and then turning on the other group also gave reading of ~2500w. Now this is the strange part, when I have both the groups turned on I still only get ~2500.

Have I missed something in the settings?

Any advice would be gratefully received.


Tony asked
Tony commented ·

1 Answer

Spannung fällt beim Anschluss an den Solarregler

Hallo, kann mir hier vielleicht jemand helfen. Es geht um Solar. Unser neuer alter Wohnwagen hat Solar auf dem Dach. Jedoch wird die Batterie nicht geladen. Ich habe schon den Laderegler gewechselt gegen einen Victron 100/20 mit den selben Symptomen. Vom Solar aus gemessen kommen ca 18-20V an.Es befinden sich zwei Panel auf dem Dach. Ich habe noch nicht geschaut ob Parallel oder in Reihe, aber vielleicht kann man das anhand der Spannung evt erahnen? Sobald das Solar am Laderegler angeschlossen wird, fällt die Spannung auf ca. 12,5 v runter. Selbst wenn ich so ein Voltmeter die man einbauen kann anschließe fällt sofort die Spannung. Jemand vielleicht eine Idee woran das liegen kann? In Sachen Solar kenne ich mich noch nicht so gut aus. Dachte erst das der alte Regler defekt sei, aber leider besteht das Problem weiterhin.





defjam asked
Ossi commented ·

3 Answers

BMS with multiple charge sources

I’m planning a 12v van system with

dc-dc charger from the a smart alternator and starter battery, 3x100w solar panels controller by a smart solar MPPT 100/30

Loads include an 800w inverter and then lights etc

I’m trying to add a suitable bms. I’m looking at the bms 12/200 to avoid the need for adding smart battery protect everywhere.

On my plan, this would go where the negative bus bar currently is, with the Orion dc-dc connected to AB and fuse box and inverter connected to LB

I have read that the solar controller connects to LB, whereas in my head, it should connect on AB with the other charge source.

Q1 Is it correct that the solar charger connects to LB and can charge the battery from there?

Q2 Does the system then negate the need for any “smart battery protect”?

Thank you for help in advance!

Ysgafn asked

0 Answers

Can SmartSolar MPPTs of differing capacities be mixed in a single system?

The existing system has a SmartSolar 250/100 which is at maximum capacity already. I need to add another 2000W to the PV array so don't need 100A capacity. A 250/60 will be adequate but will there be any conflict with differing capacities? It's a 48V system.

Bruce Kirk asked
solardude answered ·

1 Answer

3 phase AC coupled PV for backup or off grid requiring phase balancing impossible?


I am planning a three-phase installation with Three Multiplus II 5kVA with a SMA Tripower 8kW on AC out. The system will run in ESS with backup functionality.

When taking the three-phase Victron training I found this statement, which was new to me:

"A three-phase system can not aid in phase balancing during charging. Each unit will always equally charge the battery"

This really worries me regarding backup or off-grid use. Could this prevent AC PV from being useful for charging the batteries, or even working at all? I assume that three phase PV inverters will try to deliver equal power to all phases, but what happens if one phase (e.g. L1) is heavily loaded and the others are not?

I would have assumed this scenario as an example:

  • L1:Fully loaded, PV supplies 2 kW to load. Cannot charge battery.
  • L2:No load, PV supplies 2kW to battery
  • L3:No load, PV supplies 2kW to battery

But with the equal charge current rule it seems like the follwoing example is instead the case, where PV power cannot charge the battery during phase load imbalance:

  • L1:Fully loaded, no power left to charge the battery
  • L2:Cannot receive PV charge since L1 cannot charge
  • L3:Cannot receive PV charge since L1 cannot charge

This would seem reasonable enough, but what worries me in this example is that it also seems to mean that the SMA inverter is then expected to deliver power to three very differently loaded phases. I am not certain that it has the specifications to handle that.

It seems to me that to make the backup/off-grid use case viable, either the PV inverter or the three phase Multiplus system will need to do some phase balancing!

Am I right? How does this work in real life? Is it possible at all?

S_Forsberg asked
S_Forsberg edited ·

0 Answers

Solar Laderegler Mppt 75/15 lädt nicht.


Ich habe den Laderegler Mppt 75/15 neu eingebaut.

Er zeigt mir immer eine Solarspannung von ca. 12-13 Volt an.

Ich habe die Leerlaufspannung gemessen ca. 21-22 Volt die Kurzschlussstromstärke beträgt ca. 3,5 Amp.

Ich habe gelesen das die Solarspannung mindestens 5V höher sein muss als die Batterie Spannung.

Aber das Gerät zeigt nur eine Solarspannung von 12-13V an obwohl eine Spannung von 21-22 Volt vom Panel kommt.

Ich hoffe es kann mir jemand helfen.

Schöne Grüße


RAHSS asked
qwame answered ·

7 Answers

DC/DC charger 48VDC to 12VDC

In the product list there is nice DC/DC chargers for 12/24VDC input and 12/24VDC output.
How about to extend these product offerings with 48VDC input and 12VDC output, preferable isolated?

saxofon asked

0 Answers

Dual 100/30 MPPT Smart Solar Sync issue

I have two MPPT SmartSolar controllers working in parallel. It seems one is reading the input voltage as the battery voltage and going into absorption and float too early.

When the battery reaches, say, 93%, one controller drops off and eventually ends up in float, halving my output and taking longer to charge my batteries.

I read somewhere that I need to sync them, but also read that this model only has V.E Direct and I can’t connect the two via this.

Can someone clarify and tell me how I can get them working together?

Michael20x5 asked

0 Answers

Quattro Overload Fault Issue

Evening all

I have a 48V 8KVA Quattro which all of a sudden presented a fault this evening, this happened after mains failed, but because it happened after hours the generator was set not to start (via a Venus)

Because it was the first time I have seen this I went out to site and inspected everything. I couldn't see any fault and then tried to reset the unit using Remote Console. Nothing changed. I then used the switch on the inverter, swithing it off and then back on (waiting only about 5 seconds). The inverter then turned on with no problem.

After checking other posts, is see I am not the only one struggling with this, but there has been no recent posts regarding this.

I have checked and the Quattro is running firmware V430, which I find odd as if I read correctly V475 is available and the unit is only 5 months old.

Has anyone else encountered this issue, and more importantly been able to solve it?

Are the issues mentioned in other posts (faulty ribbon cables) still valid?

EwaldErasmus asked
Daniël Boekel (Victron Energy Staff) commented ·

1 Answer

Easy Solar 24/1600 Absorption and Float LED blinking


I have a problem with a EasySolar 24/1600/40-16 MPPT 100/50.

I have installed as follow:

PV Modules: 2 x JA Solar Mono JAM60S01-315/PR

Umpp = 33.16V Uo= 40.53V Icc= 9.98A

The Modules are connected in series so:

U_PV_IN = 81.06V I_PV_IN= 9.98A

Batteries: 2x AGM 12V/220Ah (100h) in series

The temperature sensor is connected on the minus pole of the batteries.

If the Inverter switch is on the inverter work fine but if I switch it to charger position the absorption and the Float leds start blinking.

What's wrong?


Gian Carlo

giancarlo64 asked

0 Answers

AC coupled fronius not contributing to load or charge

When grid is off the multi is putting out 52.7 hz which reduces fronius output. Mean time the dc mppt and battery are suppling load.

Why is the multi holding the fronius at zero?


Keith Arnold asked

0 Answers

victron 175w mono SPM041751200max fuse rating /reverse current

SPM041751200 victron

looking for the max fuse rating of these panels if anyone can find it I have searched internet with no result.

using 3 x 175 wired in parallel in a small system

sunshine asked
sunshine edited ·

0 Answers

AC connect 3kW wind turbine Victron Quattro System

I have a Off-Grid Quattro 10kVA with AC Connected 3kW Fronius Primo solar inverter and 4kW of solar panels. Frequency shift is used to manage battery overcharge. System works great in summer but we are expanding for winter with additional solar, and a wind turbine. We will AC connect an additional 4kW Fronius and solar array. For wind, we are installing a 3kW 60V AC turbine that will rectify to 48V DC and this feeds to a grid tie wind controller/ inverter (China Supply) that will synch to the AC Bus. The controller will dump power to dump resistors to protect the turbine from over speed/ voltage/ frequency.

However, i am concerned the Wind controller inverter will not spill turbine power (trigger dump resistors) when the AC Bus frequency is shifted by the Victron Quattro (High batrery voltage). Logic tells my the inverter would disconnect on high AC Bus frequency and send all power to dump resistors, though I cant be sure and manufacturer info is sketchy.

My question is whether it would be possible as a back-up to use one of the quattros Programmable relays to trigger when the AC Bus frequency is shifted to say 53hz. In this way I could trigger dump resistors to spill wind turbine power when it is not needed for House Load or battery charging.

Gallows asked

0 Answers