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jeanmarie avatar image
jeanmarie asked

Transient current cause Seplos BMS to shutdown

Hi Victron community, I have one question regarding a couple Victron / DIY LFP pack with Seplos BMS.

If it is just to say that Seplos is not in Victron's compatibility list for BMS, you can save your time and are not forced to participate to this thread ;)

I use this BMS (I have 4 of them) and it is working fine, but, as there is a "but", a big one, I discovered that using only 1 battery pack (14kWh / 200A BMS) with a 5kVA Multiplus 2 doen't allow it to start as the transient current is too high for the BMS (fixed values in the BMS are 250A for 30mS, not changeable if you don't want to damage your hardware and loose the warranty).

Is there a known solution to limit the starting current on the Victron side?

Else anyone intending using those BMS in a Victron environement must pay attention to this "detail" and better find another model if they don't intend to have 2 or more battery pack.


BMSinverter current drawcurrent limit
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klim8skeptic avatar image klim8skeptic ♦ commented ·
Google pre charge circuit.
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jeanmarie avatar image jeanmarie klim8skeptic ♦ commented ·

thank you for the tip


obviously not included in Seplos BMS, unfortunately

any suggestion for any commercial HW?


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klim8skeptic avatar image klim8skeptic ♦ jeanmarie commented ·

As simple as some wire, a resistor, and a pushbutton.

precharge the capacitors in your inverter video.

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