question

I need more information oin what you actually have to be sure however.

Presuming that you are using a VE BMS unit thats connected to the batteries - then this unit also has a load and charge relay output cutoff control so you could use these controls to turn off external loads or external charging, via a relay thats controlled by the VE BMS units outputs.

Hi Paul,

Thanks for your answer.

I do have the VE. Bus BMS with the Mains Detector (link for example):

https://www.myshop-solaire.com/battery-management-system-bms-ve-bus-victron-energy-_r_696_i_1369.html

Would you be able to redirect me towards the additional relay I need to have in this case?

Would this work automatically or manually?

Thanks,

Remi

Alright, so I figured it out:

The relays needed are the following:

• Cyrix-Li Charge
• Cyrix-Li Load

Basically, the charging/loading devices need to connected to the Cyrix-Li charge/load and then got to the respective plug in the BMS (Charge/Load). Then the BMS can be connected safely to the battery.

What I am not sure though, is:

Do I need one Cyrix-Li per charging devices ? or Do I need only one for all my charging devices (slar panel charger, 220v charger and Orion charger)? Is there not a risk of overloading the system if I am charging with the 220V charger and the solar panels are active too?

The two devices seems to be fairly easy to install but... they cost about 80€ each... that's such a huge disappointment. I keep on adding more and more cost to my Victron installation. I wish I looked somewhere else !