Looking for a Victron Energy Guru. I have questions 🤔

[Suijkerbuijk]

The same temperature sensor is used on:

BMV-702
BMV-712
Smartshunt

Its not the same temperature sensor that have a multiplus use.

Victron specs tell that .
Reason one is blue and the other is black .
You can not change them.

If it can .
The black sensor is cheaper than the blue sensor

 

[Craig Castleberry]

I think if the solar charge controllers don't have access to an external temperature reading, they use an internal temperature reading.

The same temperature sensor is used on:

BMV-702
BMV-712
Smartshunt

I got turkeys to smoke today. Happy Thanksgiving! Appreciate your help.

 

[sunshine_eggo]

I linked this previously:

Temperature Sensors [Victron Energy]

www.victronenergy.com

Everything you need to know.

 

[HarryN]

To my knowledge, that MPPT internal temperature sensor has no interface to the outside world.
It manages the MPPT circuit only.

Have you ever seen an MPPT temperature on VRM or victron connect?
I really hope I can be proven wrong on this one, because it is disappointing.

That is a common method used in solar charge controllers. ( at least it exists in some others that I have used)

In a van, it makes perfect sense, because usually the battery temperature and solar charge controller temperature are more or less the same at the beginning of the day. Perfect - no, but usually close enough.

 

[Craig Castleberry]

Get a Cerbo.
Get a temp sensor for the smartshunt.
Enable DVCC, SVS, SCS and set the smartshunt as the STS source.
Enable low temp charge protection in each MPPT and the inverter charger tab.

All chargers:
Absorption to 14.4V with 30 minutes fixed absorption for fast charging (generator)
Absorption to 13.8V with 4 hours fixed absorption for slow charging (shore/solar).
Float to 13.5V.

I got the cerbo gx, configured it for wifi and waiting on cables, some should arrive today. I used a small 12v battery and configured it from inside the house.

The GX is in the 5th wheel basement about 50 feet from the router, it's picking up wifi but really not usable. The manual shows wifi boosters, and I have found some, I'd like to avoid the high cost with victron. Do you have any experience with these?

Thank you.

 

[HRTKD]

I've had no Cerbo connectivity issues with WiFi within 50' (more like 150'). Maybe the Cerbo GX could be repositioned?

 

[Craig Castleberry]

I've had no Cerbo connectivity issues with WiFi within 50' (more like 150'). Maybe the Cerbo GX could be repositioned?

I have it mounted on the side of the basement as high as I can get it closest to the router, it has a signal strength of 58, and barely works. It has a delay of about 15 seconds to respond with the vrm remote.

The only obstruction is the fiberglass walls.

 

[HRTKD]

I would then look to troubleshoot the WiFi router. There are apps out there than can help you identify WiFi dead zones.

Maybe you need a WiFi extender inside the house at the point that is closest to the RV.

 

[Craig Castleberry]

I would then look to troubleshoot the WiFi router. There are apps out there than can help you identify WiFi dead zones.

Maybe you need a WiFi extender inside the house at the point that is closest to the RV.

I'm sitting right next to the GX with the phone and the signal is strong.

 

[HRTKD]

A few years ago, Victron had a design issue with the Cerbo GX. Internal wiring caused poor WiFi reception. But I think they fixed that. My Cerbo was purchased in July 2024 and hasn't exhibited that issue. My 2020 Cerbo GX likely had that problem.

 

[Craig Castleberry]

A few years ago, Victron had a design issue with the Cerbo GX. Internal wiring caused poor WiFi reception. But I think they fixed that. My Cerbo was purchased in July 2024 and hasn't exhibited that issue. My 2020 Cerbo GX likely had that problem.

I watched a video of a guy moving his internal antennas in the GX, but I'm not doing this unless it's a last ditch effort. I just bought this new, so hopefully it was fixed.

 

[Suijkerbuijk]

I got the cerbo gx, configured it for wifi and waiting on cables, some should arrive today. I used a small 12v battery and configured it from inside the house.

The GX is in the 5th wheel basement about 50 feet from the router, it's picking up wifi but really not usable. The manual shows wifi boosters, and I have found some, I'd like to avoid the high cost with victron. Do you have any experience with these?

Thank you.

You can stick a usb wifi on it.

USB-WiFi/home/The_Short_List.md at main · morrownr/USB-WiFi

USB WiFi Adapter Information for Linux. Contribute to morrownr/USB-WiFi development by creating an account on GitHub.

github.com

Plug and play list and you have more brands
This works on raspbery pi so it works on Victron gx unit to.
Both use the same software

So you can go for a usb wifi with a lose antenne and use outdoor or a longer wire so you can replace it.

I see a RV problem.
Go for a usb wifi and a wide outdoor antenne.
This way you can connect it.
The RV is like shield and stop the wifi signaal to go out side

 

[HRTKD]

You can stick a usb wifi on it.

USB-WiFi/home/The_Short_List.md at main · morrownr/USB-WiFi

USB WiFi Adapter Information for Linux. Contribute to morrownr/USB-WiFi development by creating an account on GitHub.

github.com

Plug and play list and you have more brands
This works on raspbery pi so it works on Victron gx unit to.
Both use the same software

So you can go for a usb wifi with a lose antenne and use outdoor or a longer wire so you can replace it.

Is there a similar list for Bluetooth adapters? A list was started on the Victron community a couple years back, but it's out of date now.

 

[Craig Castleberry]

You can stick a usb wifi on it.

You can stick a usb wifi on it.

Yup I'm wondering if a non-victron one would work, something that doesn't cost a hundred bucks. No good reason Victron couldn't make the wifi better in the GX, they should of called it cerbo gx-hd, a hundred bucks to make it work good.

 

[Craig Castleberry]

Is there a similar list for Bluetooth adapters? A list was started on the Victron community a couple years back, but it's out of date now.

I'm going to see if chatgpt can figure this out. It's helped me in the past understanding how other stuff works.

 

[Suijkerbuijk]

Is there a similar list for Bluetooth adapters? A list was started on the Victron community a couple years back, but it's out of date now.

So far i know.
List of tested dongles by Victron, that work:

• Logilink BT0037
• TP-Link UB400(UN)
• Ewent EW1085R4
• Laird BT820
• Laird BT851
• ASUS USB-BT500

So really all bluetooth module what Raspberry Pi serie use and this model will work on it.

A Pi Zero bluetooth do not work so far i know.

I have update my Raspberry Pi topic with bluetooth and wifi usb support list.

 

[Craig Castleberry]

Is there a similar list for Bluetooth adapters? A list was started on the Victron community a couple years back, but it's out of date now.

I'm going to see if chatgpt can figure this out. It's help me in the past understanding how other stuff works.

I'm going to see if chatgpt can figure this out. It's helped me in the past understanding how other stuff works.

ChatGpt said in a nutshell, wifi extender using the Realtek chipset RT5370 should work and it recommended this product on Amazon, and I don't have to wait a week to get it and it's only 18 bucks. @Suijkerbuijk has another he said works.

I think I'll try it and let you know.

https://a.co/d/7rkx3k4

 

[robbob2112]

Just be careful with chatgpt - it can lead you astray pretty quick ... I think of it as a 10 year old that knows a lot, but will repeat anything he has been told as if it is absolutly true even it is totally false...

Unless I have a general idea of what to expect as output it can be hard to know what is true and what is junk.

That said - I do use it effectivly to figure things out - I just don't trust it without reading enough to verify

 

[rhino]

Is there a similar list for Bluetooth adapters? A list was started on the Victron community a couple years back, but it's out of date now.

This blog post mentions extending bluetooth for the Cerbo GX for the Ruuvi sensors and they said the TP-Link bluetooth adapter works well. I am using it as well and can confirm.

 

[Sun in Lithium]

Installing in a 5th wheel.

Current Equipment

Multiplus II 12v 3k 50 120x2
Smart Shunt 500
4 Litime 230AH (920 AH) 12v configuration.

Actively working on installing 3,350 watts of solar, running 2 separate strings and installing two Smart Solar MPPT 250/100 chargers.

Would like help making sure my settings for charging are correct.

With the smart solar chargers, what prevents charging when freezing temps occur? Is it the smart shunt?

Thank you.

The batterys should have low temp charge protection built-in in. So there shouldn't be any need for additional low temp protection.

 

[Suijkerbuijk]

The batterys should have low temp charge protection built-in in. So there shouldn't be any need for additional low temp protection.

The bms shut down .
But again the bms have to shutdown high amps .
Wel a charger just stop with charging.
For the long run the best way is to stop charging .

 

[Sun in Lithium]

The bms shut down .
But again the bms have to shutdown high amps .
Wel a charger just stop with charging.
For the long run the best way is to stop charging .

Not necessarily. Lithium batteries can still discharge below zero. So if the solar charge controller can at least keep up with the draw. The batterys won't go dead as fast.

 

[Suijkerbuijk]

Not necessarily. Lithium batteries can still discharge below zero. So if the solar charge controller can at least keep up with the draw. The batterys won't go dead as fast.

If thare is a pull the mppt just sent it to that spot .

I have test it with shutdown maneul the bms .
So long somting is running or use power .
The mppt sent it no problem.
And that in summer time .