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smart solar set-up help

Data logging over BT from MPPT controller?

Once connected with Victron Connect, the Android app shows instantaneous data and keeps a history but there's no evident way to download that data (power, voltage, current over time). The Windows app can save the data but it cannot connect via "smart" Bluetooth. I've searched manuals, forum, etc. In this very simple system (nothing but panels, an MPPT charge controller, and a battery, no CCGX), is there no way to log the data? Thank you.

Dspectrum asked
spirou answered ·

1 Answer

150/100 smart solar history issue

I recently started setting up an off grid system dedicated to run certain loads at my house and set up a 12 volt system. I have 2x multiplus 3000 va inverters wired to 4 Battleborn batteries, a bmv 700 series, and 2x 150/100 smart solar ve.can mppt controllers. I have everything set up except the solar wiring but have noticed that one smart solar history graph is showing current max and min battery voltages (sitting around 13.5 volts since that is the float I have programmed on the inverters until the solar is wired up) and the other shows a min of 0 volts and a max of 655.35 volts. I have tried powering down the mppt, resetting the history, and resetting to default but it keeps showing incorrect voltages. Both of these are connect to the bmv via the Bluetooth smart network too. Anyone have any idea as to why this is happening?



Edphonse asked

0 Answers

Is there a way to limit Maximum PV voltage to controller?

I have a 100/20 Smart Solar controller and only 2ea 100w panels. I want it to operate at full capacity by adding panels. Due to conditions on my property I need a longish cable run from my panels to the controller. High current and long runs seem to be expensive due to the cable thickness required. I want to add enough panels, in series, to get close to 100v but am worried about damage to controller. How can I “over voltage” the panels and reduce that voltage at the controller. For example, I envision a voltage limiter of some type. Say feed 150v from panels in and get 100v max out to put into controller. Is such a thing possible? Also, why is the PV input voltage so low for the controllers? Sorry for my ignorance, and thanks for the explanation.


MaxxManic asked
WKirby answered ·

1 Answer

BMV-712 with VSR and starter battery


I have solar panels charging my ‘house’ battery with BlueSmart controller. I also have a ‘start’ battery connected to the system with a bi-directional VSR. Everything seems to be working ok. As I understand it, VSR combines batteries when either battery reaches 13.7v and disconnects at 12.8v. Solar prioritises ’house’ and alternator prioritises ‘start’ as I would want. My BMV is monitoring ‘house’ including temperature.

My question is whether I need to change my BMV or SmartSolar settings in any way to account for the ‘start’ battery. Both AGM with identical charge voltages, but very different capacities 125Ah vs 26Ah. At that moment I’ve based all settings on just the ‘house’ as if ‘start’ didn’t exist.



MarkCX asked

0 Answers

I am just beginning and want to use solar in my tiny house.

I have no idea what I am doing. Can I use a different type of battery brand with a different type of solar panel system brand? I need all the help anyone is willing to offer.

Jessica Hounshell asked
Guy Stewart (Victron Community Manager) answered ·

3 Answers

two MPPTs in parallel - does the app account for this?

If I were to run 2 x 100/20 MPPTs in parallel, both for the charging to batteries AND for the load outputs, do they communicate together and comgine the data that appears in the victron app, namely the history, yield data and consumption data? or do I have to manually double the stats for actual charge/load figures?

adev asked
Guy Stewart (Victron Community Manager) answered ·

2 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

0 Answers

Low solar wattage..Batteries not charging.

Just installed my solar system for my electric boat.

(4) 100w panels in series.

(4) 12v 100a gel batteries in series. 48v system.

Victron mppt 100/20 48v controller.

Having trouble getting significant wattage from the panels to my controller according to the phone app. Sunny sky all day long today. The little bridge pin was in for awhile but I took it out a few hours ago.

The highest wattage was like 12w, Most of the time it’s been 2-3 watts.

Minnkota display says batteries are 1/2 charged. No change all day.

Everything is connected properly, including ground.

Looking for answers on why this is happening.



CAdams asked
CAdams answered ·

5 Answers

SmartSolar MPPT 100/20 turning the load "On" then "Off" then back "On".

I purchased a Victron SmartSolar MPPT 100/20 Charge Controller. I am having a problem with the charge controller cycling the load "On" then "Off" then back "On".

Description of failure:

1. The charge controller will show that the load is set to "On".

2. A 12v fan is connected that draws a max of 9W of power or a car cell phone charger is plugged in (without the phone connected or charging)

3. The charger controller will show that the load is turned to "Off"

4. Have a pause for 1 to 2 seconds

5. The load will then be turned to "On"

Notes: The charge controller never shows a voltage below 12.6 volts from the battery so I know that it is not pulling a large load from the battery.

I don't see how a 12v phone charger without a phone connected could be tripping the 20A capacity of the controller.

SailboatTN asked
SailboatTN commented ·

1 Answer

HJow do I Re-set A Smart Solar 100/30 from 24v/Lithium to 12v/AGN

I was gifted a Smart Solar 100/30 controller. The guy who gave it to me said it is set up for a 24v system with Lithium batteries. How do I set it to a 12v system with AGM batteries? I assume the controller needs to be connected to the batteries to do this. Will this cause any issues to the controller or is there another way to re-set it/

jwh92020 asked
Matthias Lange answered ·

1 Answer

dimension question - 75/15 versus 100/20 - max PV input ?

Hi All,

* Charging 12 volt 220AH (2 x 110AH battery bank)
* 2 panels both 24V short circuit - already purchased
* Planning to install in series , looking to select a controller

75/15 or 100/20 ?


My PV voltage is well under 75 at 48V peak
My PV current will be about 6A

So on paper the 75/15 firs the bill

BUT - my total "theoretical" panel power in Watts will exceed the "nominal" figures quoted here:,-75-15,-100-15,-100-20,-100-20_48V-EN.pdf

by a good few watts

given I and V are well under, is that alone enough to say "the 75/15 will be enough"?

or should I err on the side of caution and get the bigger one please (and why please)

Many thanks in advance



bigbloke asked
Matthias Lange answered ·

2 Answers

Problem Following Update? [Smartsolar] [Solved]


I'm new to the forum.

I have a 160w Solar Panel with a Victron SmartSolar 75/15, Firmware v1.50.

I'm using a Apple iPhone X via Bluetooth, Firmware v2.25 (Rev2).

I have recently updated my SmartSolar MPPT 75/15 [App & Firmware], since the update my solar reading [voltage & amps] on the app isn't picking up, plus the app is indicating no solar activity for the last 2 days! It was 2 days ago i did the update... There has been a app update today which i've done, but i still have the solar sat at 12.4v, 0 amps, even with the sun out?

I have disconnected & checked my panel & it is giving variable voltage as i'd expect [sun going in & out].

I have also run my fridge to put load onto the leisure batt & drop the voltage, normally i would see the solar voltage/amps/watts pick up, this doesn't seem to happening since update.

I hope i given enough info, i was wondering if anyone else was having similar issues?

Thanks in advance.



WayneUK asked
adev commented ·

4 Answers

Questions about SmartSolar MPPT charging voltage and battery voltages


I would like to better understand more about how the SmartSolar MPPT 85/150 works. Last summer we had a SmartSolarMPPT 85/150 and a BMV-712 installed in our motorhome. We have 5 x 160w panels on our roof, and run 4 6v AGM batteries in a 12v system with a total of 440AH. The settings in the SmartSolar MPPT are custom set to Absorption 14.4v, Float 13.4, Equalization 15.5v.

I am still learning, so please forgive that some of these questions may be very basic. I really appreciate any help or ideas here.

In general, we feel like our batteries don't last as long as they should. So we're trying to test things and figure out if something is wrong with our batteries. We will also try and take better notes so we have something more helpful to share than just a vague feeling.

#1) I was looking at this document... And it says, "With regard to the Solar Panel voltage, note that the Solar charger will only operate once the Panel voltage has risen more than 5V above battery voltage." So do I understand correctly that if for example our battery voltage was 12.4v, and the voltage coming in from our solar panels was 17v, that it would not charge the batteries? In this example would the voltage from the solar panels need to be 17.4v or greater?

#2) I have a screenshot from a sunny day last summer. If I understand correctly, the voltage coming in from the solar array was 16.76v, and the battery voltage was 14.17v, and it says the battery was in Absorption stage. But since the voltage of the solar array was not 5v higher - would it actually be charging?

#3) We disconnected our batteries today. Right after we disconnected them, Battery 1 was at 6.29v, then after 5 hours of being totally disconnected it was at 6.23v. Battery 2 was at 6.30v, then 5 hours later at 6.23v. Battery 3 was at 6.31v, and 5 hours later at 6.24v. Battery 4 was at 6.31v, then 5 hours later at 6.24v. This will sound very silly - but I'm not quite sure what to make of these numbers! :) I am planning on calling the battery manufacturer tomorrow to ask. It seems like it's good that they were all pretty similar. We know the batteries weren't fully charged before we disconnected, and that we may have to do this again. If anyone has thoughts on whether these numbers sound good or bad that would be great. According to the battery manual, these 6v batteries would be considered full at 6.4v or more, and 6.25v is considered 25% depth of discharge.

#4) Is it possible to equalize our batteries too much? In reading the battery manual, it suggests equalizing them at 15.5v for 8 hours. And that you may have to do this 2 or 3 times. Can anyone tell me if it's dangerous to do that too much?

Thank you so much!!

kshilanski asked
adev commented ·

1 Answer

SmartSolar lithium battery storage settings?

I have a solar setup with 2x100Ah lithium batteries and two solar panels about 120w each, connected in parallell. 5-6 months of the year (wintertime in Norway) the system/cabin is not in use. Temperatures are well below zero parts of the winter, see temp. chart. In summertime and clear conditions, batteries are generally fully recharged in less than 2 hours the next day with perhaps an average 300Wh charge.

I am pretty sure the batteries (data sheet attached to this post) where delivered to me at storage voltage 13,17v each. The batteries are supposed to have a "Under temperature charge protection" (0C/32F).

What are the best SmartSolar 100/20 settings for "storing" the lithium batteries over the winter under these conditions?

MERITSUN LFP100-12.8.pdf


Tom56 asked
Fideri commented ·

5 Answers

Do SmartSolar charging algorithms self adjust for cable runs or should I pick a higher charging algorithm?

340W panel. into 100/30 Smart solar. charging AGM 110ah batteries. THese batteries want an absorbtion voltage of 14.6-14.8volts.

I have a 10-12foot cable run. I currently have installed AWG10 wire between the smart solar and the battery which means if I set the charge profile to profile 3 and 14.7 volts, the voltage at the batteries I think will actually be 14.26v. this isnt enough for these batteries to absorb correctly.

Here is where my electrical knowledge has a gap.

should I select a higher charging profile like profile 5 with 15.1v at the charger and a resulting 14.66 at the batteries after the voltage drop on the cable or will the voltage selected in the profile be the voltage at the batteries?

i.e. do I need to adjust the profile to account for voltage drops in the cable?

gavinge asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

Automatically switch on Phoenix 12/500 VE.Direct on recharged battery


is there a way to turn on the Phoenix 12/500 inverter at a defined battery level (or voltage)?

I have a small island system with 240 Wp charging a 55 Ah/12V LiFePo via SmartSolar MPPT 75/12. This is running fine so far, but I often have a fully charged battery with no way to discharge it on the 12 V system (which I use to charge smart devices and notebook computers). So a lot of sun energy is wasted (charger in float mode).

So I installed a Phoenix 12/500 inverter that now runs a fridge most of the time. I also installed an automatic transfer switch, so the fridge gets landline power in case the battery is too low for the inverter. This also works fine.

But now the inverter discharges the battery completely and then it does not turn on again, when the battery is full again. But I would like to switch off at 20% battery level (so I have enough spare for my more efficient 12V system) and automatically turn on at 80% battery level (so the inverter just kicks in, when I risk to run into a 100% full battery)

Is this all possible with the two Victron devices or will I need to read the battery level with an Arduino via from either MPPT or inverter and then switch the inverter manually on and off via the remote control port of the Phoenix?

Thank you very much


Oli_ asked
ripper answered ·

1 Answer

Smart solar 150/100 with Tristar Diversion controller settings

Hello all

I plan to use a Morningstart Tristar pwm diversion controller in solar system with a Victron 150/ 100 MPPT to divert excess energy to a DC immersion heater . I am struggling to understand the settings esp on the morning star. The manual and vids for Tristar suggest that it should be set to absorb above the absorb level of the Victron ( in my case with Victron AGM's this would 14.4 V for Victron and 14.6v for Tristar my question is if Victron holds voltage at 14.4 and decreases current as it does in absorb. Am I right in thinking the voltages will never reach the Tristar diversion threshold so will never divert anything . And it If I set tristar at 14.4 v will there be anything to divert as Victron will be trying to drop the current in absorb ? Does anyone have any experience of this set up and ant advice on level to set Tristar at ?

regards Simon

Narrow Boat Boy asked
Espen commented ·

2 Answers

Two batteries + temperature with SmartSolar 100/30 and BMV-712 with a smart battery sense dongle?

I have had a SmartSolar 100/30 installed for around a month, and am going to install a 712 that just arrived.

While not critical, it'd be nice to be able to get the voltage from both of the batteries in my aux bank (2x LiFePo4 12v @ 180AH in parallel) just in case they get out of alignment (though the regulators on them should handle that) as well as temperature (so my smartsolar doesn't try to charge my batteries when they're too cold later in the year - more important!).

It seems like if I'm going to buy a bmv temperature cable for $21 that'll take the place of my second voltage sensing cable, I might as well just get a for my solar charger for $31 (well $39 for the newer version) and pull in temp with that and be able to get the voltage of both of my batteries.

Possible downsides:

1 - The voltage sensing on the bmv is supposed to be more accurate than that from the smart dongle, could that create conflicts?

2 - Having three things that need to communicate over bluetooth instead of two. Is the complexity worth it?

erutan asked
erutan commented ·

1 Answer

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
mvader (Victron Energy) answered ·

1 Answer

What is the point of BMV synchronisation?

Ok, so I am having problems getting synchronisation to to occur at the correct point in charging with my solar panels.

I have 80w of solar (2x40w in series), a SmartSolar 75/10 and a BMV 712 connected to Victron 125Ah AGM battery. No matter what settings I try, sync always occurs before the battery is anywhere near 100% based on ah out/ah in, especially if I have charged voltage set to just over float. My solar amps are often below the tail current for a significant amount of time, purely due to the weather conditions where I am.

Does synchronisation actually serve any purpose? If so what am I missing. If I set the parameters so that sync could never be achieved, relying solely on ah out/ah in to indicate 100%, what difference would that make.

I feel as if I’m spending time and effort chasing something that might be unimportant. Please could someone explain if otherwise.



MarkCX asked
MarkCX commented ·

3 Answers

Smart Solar voltage spike with brand new Lipefo4


kosio86 answered · 4 hours ago


I have an issue with my brand new setup today.

Setup: Lifepo4 200Ah with internal BMS and built in display>Smart Battery Sense connected directly to battery leads>35mm2 copper wires with beefy hydraulic-pressed copper lugs>150A fuse 20cm after battery on positive and Shunt on negarive>60cm 35mm2 copper wire to Smart BP100 on positive and negative to common ground with chassis, Engine battery and SmartSolar>Smart Solar 100/20 positive connected to BP100 In trough25A fuse with 30cm 10mm2 wire>1m 35mm2 wire from BP100 Out to breaker panel>Fridge connected to 25A breaker with 2m 12mm2 cable. 200w single 42v PV.

Irrelevant devices:AC Sterling power 20A charger connected to shunt out and BP100 In. BB1260 Sterling Power DC to DC charger connectes to shunt and BP100 In. Eberspacher Diesel Heater connected to BP100 In(trough 25A fuse and 12mm2 3m wire) , as it is not recommended to shut it off while it is Hot at it has cooldown cycle. Some other devices connected to Breaker panel after BP100 Out. All those were off, but connected.

State before test: Solar noon-overcast. 20C° shown by both inbuilt battery and Smart Battery Sense. Brand new 200Ah Lifepo4 battery showing 88% SOC and 13.3v on its Built-in diaplay. SmartSolar was Floating @13.3v and not charging(confirmed charging the previois day). Lifepo4 profile was selected and then set to Custom, so Absorbtion voltage was lowered consevatively to 13.95v and Float lowered to 13.3v. Smart Solar successfully connected to SmartBattery sense trough bluethoot network. No temp compensation just low temp cutoff. All loads OFF.

Test1: I turned the Fridge ON and Smart Solar started providing 3A of power(shown in BT app) . Battery was providing just 1A of the total 4A the fridge needs (shown on shunt monitor). Then I turned off the fridge using a breaker after Smart Battery Protect 100 and I got 16.5V spike reading at the Smart Solar and BP and at the Smart Battery Sense BP threw E4 for high Voltage. The spike dropped gradually down in several seconds.

Test2:I disabled charging trough SmartSolar Battery settings page and turned on the fridge. 4A drawn from battery (as shown on shunt monitor). 0A from Smart Solar as it is off. Shunt, Battery Sense, Smart Solar and BP100 show very similar voltages, so I assume no voltage drop in my connections. Then I turn off the fridge using the breaker and voltage doesn't spike.

I am expecting delivery of good Multimeter with DC current clamp soon and I could get more readings. I could take photos, too. I am scared that I am planning to use 60A-65A trough a Phoenix Invertor and turning the Invertor off would cause worse voltage spike and burn my Eberspacher, or other device, if solar is at its max 200w

kosio86 asked
kosio86 answered ·

2 Answers

Is it possible to reset lost Bluetooth password on Mppt smart solar
  1. I lose the Bluetooth password on Mppt smart solar 100/20 is it possible to reset this ? Thanks for help

solguy asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

Editing and removing custom presets in Smart Solar

I have made a couple of battery presets and would like to delete one. I press the blue remove button but nothing happens. I also cannot save changes when I edit a preset.

Is this a bug or am I missing something here?

mahdi asked
Allan Fraser answered ·

6 Answers

Victron 100/20-48 is so Hot. The blue cover has softened and distorted

SCC 100/20-48- first use the controller became so Hot that the blue cover actually softener and distorted. SCC was mounted on outside of cabinet in my RV- plenty of air- no direct sunlight. It was getting 70ish volts and 8ish amps outputted to a 36 volt lithium battery. The SCC continues to work well even as it runs Very Hot. Has anyone seen a distorted cover like this?

KLS asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

RX Port function on Victron Connect

I have a Smartsolar 100/50. How do I access the RX Port function on Victron Connect? It does not show up as a function when I am connected to the app. I am trying to remote on/off the charge controller from my BMS using the RX pin. Under settings I can see 1. Battery. 2. Load Output. 3. Streetlight 4. TX port function 5. VE Smart networking. Where is the RX Port function?

jmyandel asked
Guy Stewart (Victron Community Manager) answered ·

2 Answers

Smartsolar MPPT data on VRM

I have several Smartsolar MPPT 75/15's I'd like to monitor via VRM.

On the MPPT History tab it provides 4 data fields - Solar Yield in Wh, Consumption in Wh and Battery v max and min.This is all the data I need.

I've connected one, To Test, to a Rasberry Pi via VE Direct Cable then wifi to Internet

When I look on VRM all I get is solar yield, and load output current on graph

How can i get the only 4 fields of data I need?

Brad-Australia asked

0 Answers

SmartSolar 100/20 and GoalZero Yeti


I'm new to Victron and am looking at adding the Smart Solar 100/20 to my current setup.

My current setup is a GoalZero Yeti 1400 with their expansion module that is connected to my vehicle battery/alternator. The module interfaces as an isolater and voltage regulator since the vehicle battery is an AGM and the GoalZero is lithium.

I would like to add 200 watts of solar that would keep both batteries topped off.

I am new to solar so I wanted to run this flow by the community.

Solar>MPPT (set for AGM settings)>alternator/AGM battery.

My thinking is the MPPT can watch the V of the vehicle battery and the Yetilink module will pickup on the higher voltage and charge the GZ lithium battery.

Does this sound correct? If the alternator were to come on, would it damage the MPPT?


notfamous asked

0 Answers

4 x 100/20 smartsolar network waiting for data - do I need a bmv

I have successfully set up a network of 4 x 100/20 smart solars but they indicated they are awaiting on data. How do they get that data - by speaking to each other or via a third party such as BMV?

Mirriulah asked
ejrossouw answered ·

3 Answers

Tricking an MPPT 100/20


I would like to use an MPPT 100/20 primarily as a data logger to test the peformance of a new type of panel. I want it to track the maximum power of a single 300W panel and to record the power output of the panel as a function of time. My question is can I just connect a resistive load to the Battery output of the MPPT to dump the energy? I have a resistor bank which can dissipate 300W. I have tried this with some success and the MPPT is in bulk mode for most of the time. It stops periodically and all 3 lights flash (which is not one of the cases explained in the manual). I am wondering is the MPPT searching for a minimum voltage on the battery output? A key thing is that I want the MPPT to remain in bulk charge mode, as if it goes to absorption or float it will artificially reduce the output of the panel. Anyhone ever try something like this?



mccloskd asked
mccloskd commented ·

2 Answers


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