Connecting a Victron Lithium Battery to a non-Victron Inverter

DIY
1

I have a Victron Lithium battery and want to connect it to a non-Victron inverter. I now know I need a BMS and 2 x Smart Battery Protects. However, in the Smart Battery Protects manual, S 3.2, it says the SBP is controlled by the inverter via the “remote port”. It appears the “remote port” is a Victron thing. However, as I am not using a Victron inverter, is there another way to connect this battery and a non-victron inverter?

2

Hi @Mercrusa,

The system wants some way that the battery+bms can communicate with the inverter to tell it to turn off when necessary.

Exactly how that is done will vary on the inverter brand. So it’s potentially supported, but if there is no way to trigger a remote on/off from the BMS then it should not be attempted.

Just relying on the BMS contactors to protect the batteries is a bad idea, the inverter needs some on/off control as well.

It’s not supported to connect an inverter to output of a Smart Battery Protect. The on/off signal should come from the BMS.
Then additionally use a large contactor like the Lynx Smart BMS in case that is failing.

The remote port on the Smart Battery Protect is intended to signal to the inverter, not for the inverter to signal to the Smart Battery Protect. The inverter does not control the Smart Battery Protect.

3

You could use a Cyrix-li-load to cut the power to the inverter.

4

Thank you for clarifying that.

have come across this - do you think this will work, or not?

https://diysolarforum.com/threads/diy-wiring-victron-smart-battery-protect-and-lithium-lifepo4-with-60-bms-and-2000w-inverter.4545/

5

Thank you for your response. Are you able to do a diagram for me please? I want to be absolutely sure I understand exactly how you mean.

Rgards

Myles

6

Take a look at the datasheet/manual:

7

20250910_185259
20250910_1852591920×2560 355 KB

Is this what you mean?

8

Hi Matthias, as I already have an inverter, which is not a Victron, and no provision for the inverter to connect to the BMS, could I use a Small BMS?

9

Hi Matthias

Just to clarify, do you mean using a Cyrix-Li-Load instead of, say, a Battery Connect?

If so, I understand they do two different things.

10

In that schematic your inverter is the “DC load” on the left.

The Cyrix is a relay and the BatteryProtect is a semiconductor.

11

Yes, Thank you Matthias, got it.