EG4 Wallmount Batteries with Victron Cerbo/System

[IslandDiver]

Not a DIYer but a local Caribbean new install. I am also new to Solar and working to get a decent understanding of what I have. I am new to the forum and look forward to learning.

My first question is if I should be able to see the available Kws from each of my two, soon to be three, EG4 batteries via the Cerbo display or better yet the VRM app. While I can see data, I can not find or see the Kw per battery (or even the total).

Thanks.

 

[Quattrohead]

You would have to interrogate the battery's directly for individual information, the victron shunt can only see total incoming and outgoing power and voltage.
Solar Assistant is still the best overall piece of software for easy to install and get running on a Pi, then you can get fancy and dump that into home assistant and do whatever you want with it.

 

[Q-Dog]

I guess the questions is, can the EG4 batteries communicate with the Cerbo? @EG4TechSolutionsTeam

 

[IslandDiver]

I guess the questions is, can the EG4 batteries communicate with the Cerbo? @EG4TechSolutionsTeam

They can and I can see different information, just not seeing the available Kw per battery.

 

[IslandDiver]

Ahhh … another reason to think about building/coding on a Pi. It’s been a back burner thought for a few years… A few different projects I’ve been considering for them…

 

[IslandDiver]

As noted, I see the Installed Ah Capacity but not the Available capacity on the Remote Console and not the Installed/Available Kw, neither are visible to the VRM app.

 

[EG4TechSolutionsTeam]

I guess the questions is, can the EG4 batteries communicate with the Cerbo? @EG4TechSolutionsTeam

Yes, they can!

 

[IslandDiver]

Yes, they can!

Thanks … should I be able to see available Ah and even kWh (installed and available). These are not currently showing. Appreciate your help and support.

 

[ricardocello]

Multiple battery packs are aggregated by the EG4 Victron protocol to the Cerbo as one big battery.
Individual battery details generally are not sent by any of the protocols, that’s the way most battery protocols are designed.
Here are my 3 EG4-LL v1s.

 

[Madcodger]

Yes, they can!

Can the EG4 battery also communicate with Victron Venus OS running on a Raspberry Pi? I have a Victron Powerpro indoor battery connected to a small, otherwise Victron system (Multiplus and a SCC). I've been monitoring all of it with a BMV712 that utilizes their shunt, connected to a RPi. That works well, but I'd love to see battery info as well. Can you please provide additional details about how to connect the battery to the RPi/Venus OS? Thanks!

 

[ricardocello]

Can the EG4 battery also communicate with Victron Venus OS running on a Raspberry Pi? I have a Victron Powerpro indoor battery connected to a small, otherwise Victron system (Multiplus and a SCC). I've been monitoring all of it with a BMV712 that utilizes their shunt, connected to a RPi. That works well, but I'd love to see battery info as well. Can you please provide additional details about how to connect the battery to the RPi/Venus OS? Thanks!

Only if you install a custom driver and a USB to RS-485 adaptor (dbus-serialbattery for Venus OS).

see https://mr-manuel.github.io/venus-os_dbus-serialbattery_docs/general/supported-bms

Rasp Pi does not have CANbus for the battery communication, but you can add a CANbus hat

Raspberry Pi CAN Bus Integration: An In-Depth Working Guide

Integrate CAN bus with Raspberry Pi: Our guide explains the setup using USB/SPI adapters and provides practical, proven implementation steps.

www.autopi.io

I haven’t done any of this, i just know of its existence. It’s not clear to me how well it works, or what batteries are supported.

 

[Madcodger]

Only if you install a custom driver and a USB to RS-485 adaptor (dbus-serialbattery for Venus OS).

see https://mr-manuel.github.io/venus-os_dbus-serialbattery_docs/general/supported-bms

Rasp Pi does not have CANbus for the battery communication, but you can add a CANbus hat

Raspberry Pi CAN Bus Integration: An In-Depth Working Guide

Integrate CAN bus with Raspberry Pi: Our guide explains the setup using USB/SPI adapters and provides practical, proven implementation steps.

www.autopi.io

I haven’t done any of this, i just know of its existence. It’s not clear to me how well it works, or what batteries are supported.

Thanks! Very helpful info. I may do it, but probably not soon, as I have too many other projects and it's all working fine.

The Victron shunt on the BMV-712 is ridiculously accurate and is connected to the RPi via VE Direct. The battery itself is the only thing not monitored, and the load on that system is so low it hits 100% almost every day before noon, even in winter. So, I'd perhaps get individual cell data, but that's of marginal value, I suppose.