Temperature Sensor Image

Temperature Sensor

Best option to get battery temperature sensing?


I want to provide battery temperature sensing to improve charging with my two BlueSolar MPPT 100/50 chargers with bluetooth dongle (in parallel, I know, I cannot synchronize them). I see two options, either go with the wired battery temp sensor (ASS000100000) for the BMV-712 that I have, or use one of the smart battery sense (SBS050100200, SBS050150200) that will be seen in the network.

Which is a better option?

Thank you in advance

fede-h asked
fede-h commented ·

1 Answer

Cerbo GX Celsius to Fahrenheit Issues

I know that it is ridiculous that we still use Fahrenheit in the US and the rest of the world uses Celsius. That said, there seems to be at least some provision from Victron that allows this to be switched and I would like to figure out how to do it. I have switched it everywhere that I think I can but still have mixed results. The VRM (mostly) works in displaying F over C but even then, there are bugs it seems. You'll notice that my sensor "Inside Temperature" is in F so that's good:


However, if I got to the advanced tab, sometimes it's in F and sometimes it's in C. Note that the Shunt Temperature Sensor is in F but the Battery Summary is really in C and just appends the F after the Celsius value. What's even stranger, if I wait 10 or 15 minutes, the Fahrenheit value will magically appear in the Battery Summary. Go back to the Dashboard and then back to Advanced and it shows the Celsius value again and you have to wait for 10 minutes for it to change:


Finally, I can't for the life of me get the console to show it correctly ever. This is the most bothersome for sure. Since most of the time I won't have internet access, I installed the rather pricey GX Touch 50 to display what is going on at a glance. I was planning on adding sensors for my fridge and freezer after adding the Victron Energy Temperature Sensor for GX Devices for ambient inside temperature as well. However, I simply can't get Fahrenheit to display on either the remote console from VRM or the actual GX Touch 50 so I'm holding off on that for now. Intuitively, I would think that you would select the temperature sensor from the device list and change it in the setup as shown but there is no provision for that.


There is a provision in the app shown here (this is an older screen shot, I am running the v5.41 and still having the same issue):


I've searched this forum, the Facebook forum, called tech support at a US dealer and I simply can't figure out how to get F displayed on the Touch GX. Is this simply not a feature for the Touch GX? Is Fahrenheit only available in the VRM? At a minimum, I think there is a bug in the VRM as shown above with the Celsius value stamped with an F after it in the Battery Summary. I've been really satisfied with all of my Victron components otherwise. I have to imagine that there is a way to show Fahrenheit on the Touch GX though. I can't be the only person on the planet with this issue so my guess is that it's me! If anyone can provide step by step here, that would be amazing! Thank you!

silvertown asked
silvertown answered ·

3 Answers

What is the temperture measurement accuracy of Victron sensors?

I've purchased a new MulitPlus II with included battery temperature sensor but the sensor is reading many degrees high, while I'll be using the sensor on LifePO4 batteries the low-temperature reading is the most critical in my situation. What accuracy should I be expecting from Victron temperature sensors?

Can the temperature sensor be corrected with software?

What temperate sensor is glued into the battery sensor? is it just a simple LM335?


raymiller asked
sunnycoastgreg answered ·

4 Answers

Temperature sensor on Cerbo.

Hi all.

Does anybody know if the temp sensors of the BMV 712 - 712 works on the temp connectors of the Cerbo? I do

I have connected the sensor wires to the connector block on the Cerbo, and also the sensor otself to the positive bolt of the battery clamp. but it keeps saying disconnected. However it does show in device ( Temperature sensor that it is connected). It also shows a sensor voltage of 5.76 V.

Am I doing something wrong ? Is this the right sensor for the Cerbo ?

leverg asked
leverg commented ·

1 Answer

Smart Shunt 500 and Smart Battery Sensors

Hi in my van system I am having the batteries. One Starter Battery, the first Leisure Battery charged and controlled by the MAN controllsystem and my new Lithium Leisure battery 2.

Battery 1 and 2 are connected via a Smart Orion with alternator recognition. To measure my power consumption I would like to use the Smart Shunt on battery 2.

From my former car Iam having 2 Smart Battery Sense Devices. Should I use the Smart Battery Sense Devices for the Starter Battery and Battery 1? then I should by the temp. sense for the Smart Shunt?

Uncertain what is the easiest way of having voltage and temp information from all batteries?

Thanks Kirsten

kstyler asked

0 Answers

Can setting low temp cutoff in BMV-712 stop AC converter charging?

I am running the BMV-712, Battery Smart Temp Sensor and the MPPT 100/15 with a 2x LiFePo4 200amp hour battery bank. The battery bank has BMS onboard but a low temp cutoff is not included unfortunately. I have things set with the MPPT to cutoff charging at 3deg C but that is only when charging from solar. It looked like if I set the BMV-712 relay low temp cutoff setting to 3deg C, it would cut charging regardless of whether it was from solar or the AC charge converter but my tests are showing the relay closed when it's supposed to be, however the AC charge converter is still charging the battery bank. Any thoughts or ideas? Thank you in advance.

jdhaasdmb asked
Kevin Windrem commented ·

1 Answer

Plans to increase precision of Cerbo GX temperature sensor scale and offset values?

I‘ve calculated a linear regression (ie. Slope, y intercept) from 2 known temperature points fir a temperature sensor. But the precision of the Scale and Offset values is inadequate. The scale only allows one decimal and the offset none, only an integer. Is there any plan to improve the allowed precision of these 2 values to allow a full floating point number to be entered for each?

waveform asked

0 Answers

Do I need Multiplus temp sense if I have BMV 712 and smart dongle for MP??

Finishing up my 12/3000/120 install and was wondering if I need the t-sense installed if I already have bmv 712 with temp sensor and a smart dongle for multiplus? Will the bmv tell the multiplus the temp?

marrott01 asked
Paul B edited ·

1 Answer

SmartShunt 500 amp Battery Monitor (Bluetooth) + ASS000100000 Temperature Sensor Not Working

I'm unable to get a temperature reading from the ASS000100000 when plugged into my Bluetooth 500A SmartShunt monitor (red wire from pos battery terminal to pos input on shunt terminal, black to neg input). App only shows "--" for temperature regardless of what I do. Have tried replacing the temperature sensor but with the same results. Bad SmartShunt? I would appreciate any guidance!

jcity asked
jcity commented ·

1 Answer

Is it possible to visualize temperature sensors on the new VRM dashboard?

Very nice with the new VRM dashboard. Really love it, but temperature sensors are still missing. Any plans for adding that feature, and is there any way I can add temperature sensors myself to the dashboard? Just some simple indicators or scorecard showing name of sensor and temperature would suffice.

High hopes for this feature. It would complete the current dashboard.


trulsla asked
trulsla answered ·

2 Answers

712 Temperature Sensor wiring

One end of the Temperature sensor wire has *2* prongs. How do I attach this to the +B2 terminal? Using just one of the 2 prongs? What is the 2nd prong for?

motees asked
Mark commented ·

4 Answers

Temperature Sensor just popped up on VRM Portal - Thanks

Thanks Guys, I just noticed my Temperature sensor pop up on VRM Portal.


and on my RPi as well.


Ingo asked
Teun Lassche (Victron Energy Staff) answered ·

1 Answer

BMV712 temperature sensor and status not working

I got a temperature sensor on my BMV712, but no matter what I try in settings, it shows nothing like it's not connected.

I got another one from the store to see if it maybe broken but that one gave the same result.

Other issue.....after a little while BMV712 shows load drops to 0% in a couple hours after charging, but the 4x 12V220Ah agm's are fully loaded.( New batteries)

Can it be a broken print on the shunt or is the BMV itself broken?

Everything else seems to be working fine...

Multiplus 12/3000/120, 360Wp, Mppt12/24-40

edwin-prasing asked
edwin-prasing answered ·

2 Answers

10K Ohm thermistors

I have 16 built-in 10K Ohm thermistors for battery temperature sensing. How can I use them? Color Control GX, 2 Quattro inverters 48/5000/70-100/100 120V (split phase), one MPPT 250-100.

rloftinbiz asked
marc-de-montreal answered ·

1 Answer

Why do I get "reverse polarity" when connecting a PT100 temp sensor to Cerbo GX?

I'm planning to connect several temperature sensors to my Cerbo GX to monitor engine room temperature, fridge, freezer and sea water. However, when connecting my first PT100 element to my Cerbo, it only states "Reverse polarity" as status and no temperature. I have checked the PT100 element, and it works well. I have also tried to switch polarity on the connectors, but still it does not work. In the status it also states 4,2V, which is strange as it should state resistance. Any clues?

trulsla asked
klim8skeptic commented ·

2 Answers

Measuring and Switching on Extraction fan based on temperature using the relay and a GX

Hi, I'm also trying to see if I need use a Thermostatic bimetal tempertaure sensor https://www.tro-pacific.com/collections/controller/products/thermostat-no-10-50-deg-c-61-x-34-x-35-mm

to measure the temperature inside an electrical box and connect this to CERBO GX Temp inputs to trigger a relay switch and turn on an extraction fan.https://www.tro-pacific.com/products/filter-fan-58m3-h-230v-50-60hz


1. Is this possible to connect this Thermostatic bimetal temp sensor to CERBOGX?

2. Do I need to use Thermostatic bimetal temp sensor or could use victron sensor somehow for this purpose? https://www.victronenergy.com/live/temperature_sensors

rikesh asked
Kevin Windrem answered ·

2 Answers

Temperature probe output location

I am upgrading my electrical system on my boat and have the following VE equipment:

2 X Lithium Smart 12.8v 200 amp batteries


Multiplus 120v 3000 12 Charger/Inverter

Cerbo GX with touch 50

BMS CL 100 12

Batery protect 65 & 100

My question is where the temp probe should sit. I currently have it oFr my multiplus with 2 positive wires running from my shunt to service and engine battery. The schematic I got from my Victron installer indicated the temp probe should come off the shunt? If I do that how do I feed my 712 readout with battery info And power?

dfraizer asked
wkirby answered ·

1 Answer

Temperature Sensor with Cerbo GX and touch 50

Hi, I'm using a temperature sensor (ASS000001000) connected to the Victron Cerbo GX to measure the ambient temperature in one of the cargo bays in my vehicle. Two questions:

1) How do I configure the Victron Cerbo GX to show Fahrenheit instead of Celsius on the Touch 50?

2) The sensor is showing about 5 degrees higher than measured with other temperature devices. Probably because of its placement. Is there a way to adjust the display so it will display the actual ambient temperature? I would like to keep the sensor it its current place.

Thank you!


davidcolemandc asked
davidcolemandc commented ·

2 Answers

VRM+BMV712 - No Batt Temp

I have recently hooked up my BMV712/MPPT Solar to VRM portal via VenusOS - its really great and loving it so far.

I have battery temp being fed into the network by Smart Battery temp sensors. And this works as I can see Batt Temp on the solar? (or was it the BMV?)

Anyway - I was wondering if I am doing something wrong as despite the battery temp being on the network, it is not passed through to VRM.



bigal asked
mtnbrit answered ·

2 Answers

connexion et parmétrage sonde T° sur cerboGX


après avoir connecté 4 sondes T°(autoconstruites LM335Z) sur les entrées analogiques d'un cerboGX, je n'arrive pas à les nommer , personnaliser et calibrer dans la liste d'appareil, meme en rentrant dans le sous menu configuration ou appareil (qui ne laisse que 3 choix tres restrictifs batterie, generic, refrigrerateur) et ce malgré ce qui est annoncé dans le manuel cerboGX :

Le paramètre de la température peut être configuré comme Batterie, Réfrigérateur ou Général. Vous pouvez également déterminer un nom personnalisé dans le menu de l'appareil.Vous pouvez régler le décalage et l'échelle de température.

pour info la version micro logiciel est v2.56

merci de votre attention.

bonne année autonome


permawatt asked
Thierry Cortassa (Victron Energy Staff) answered ·

2 Answers

Venus GX temperature inputs

There are two temperature inputs on the Venus GX, but there is not much information about them in the manual. Are these only for the Victron battery temperature probes or can I connect another temperature sensor to them, like for monitoring for example room temperature, and if so, what kind of sensors will work (types like PT100, PT 1000 etc.)?

sintesis asked
josmeijer commented ·

6 Answers

Analog engine data to NMEA2000 using the Cerbo GX?

I am planning to get a lot more data to my NMEA2000 network. I have just ordered a Cerbo GX and planning to get water tank, fuel tank and septic tank data to the NMEA2000 network using the resistive tank level inputs on the Cerbo GX and the VE.Can to NMEA 2000-adapter.

My engine is a VolvoPenta MD2040 and a bit older engine without support for J1939. I am also considering several options such as EMU-1 from Actisense. But want to see if I could find a simpler solution instead.

I want to get the following data from the engine to the NMEA2000 network, hopefully using the Cerbo GX.

  • Tachometer/RPM data from alternator
  • Oil pressure
  • Engine temperature

Is there any option to get engine data to the NMEA2000 network using the different tank, temperature and digital inputs on the Cerbo GX?

djingis asked
jwfrary answered ·

2 Answers

Cerbo GX VRM : temperature and tank level

I have temperature sensor and connected the tank sensor to the Cerbo GX.

The Cerbo GX device has reconised these input however it does not show up in my VRM view.

What am I missing here ?

Control panel ::


My VRM view


henrikvj asked
vincefarrar commented ·

1 Answer

Old Multiplus low temperature cutoff

I have an old Multiplus 24/3000/70 (still has VE-Bus, it's the 19xxxx model), a BMV 712 and a 30a smartsolar MPPT. I've purchased a large "drop-in" LiFePO4 battery with no LT cutoff and no external comms. Can anyone assist with low temperature cut off?

- I know how to do this with the MPPT - (either by using a temperature sensor to BMV712 or using a Smart Sense and linking with Bluetooth.

- The question is, how do I cut off the Multiplus (someone accidentally turns generator on to charge for instance and it's below 5 degrees in battery compartment. Do I use the same sensor and use an assistant and 2 wires (not sure how this works) from the BMV 712? Should I use a smart sense bluetooth connection for MPPT and a separate wired temperature sensor?

Any help would be really appreciated.

damjeff asked
damjeff commented ·

1 Answer

Temperatures to be displayed on the GX touch

Hi, is there a way to display the measured temperatures on the preset screens so it is easy to access? The only way i was able to find out is to go into the settings.

Thank you


sv-unsinn asked

0 Answers

Low temperature cutoff for Smart MPPT and Quattro ?

I have a Quattro and Smart MPPT. Both would be normally connected over winter. I'm planning to have LiFePO4 batteries and want low temp charging cutoff for less than 5DegC. I also have a BMV-700 and am planning to integrate with a CCGX.
Can 1 temperature sensor tell both the Quattro and MPPT to stop charging below my cutoff ?
Which temp sensor and how/where should it be connected ? Or am I best getting 2 sensors one for the Quattro direct and one for the Smart MPPT.

peterbc asked
peterbc edited ·

0 Answers

Temperature sensor for water

Is there a temperature sensor for water with a connection to Cerbo GX?

ales-volopich asked
sv-unsinn answered ·

4 Answers

Temparture sensor error Quattro 10000

Dear Community

I please need some advise. Of late I am seeing a temperature sensor error. The reading on the Quattro menu will sit on 36 and then suddenly go to i.e 50 and then immediately return to say 35/36. All my equipment is well ventilated and I am adding additional ventilation in summer. During this spike there is no hug power demand , around 640W . What can cause this?

Looking forward to some advise


pappag asked

0 Answers


152 Posts
246 Users

Topic Experts

173 Points
0 Points
0 Points