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mrfrodo asked

Cerbo GX V3.00 and after update to V3.01, System changes CVL from diyBMS

Hello everyone,

I noticed today with Cerbo version V3.00 that the BMS specifications of the diyBMS (CAN bus - Charge Voltage Limit CVL) are changed by the Cerbo system.

55.2V was set in the diyBMS and after activating the DC coupled PV feed in and limiting to 100/1000W, the CVL value changed to over 58V!!!! The diyBMS then opened the main contactor.

If I switch off the limitation, the CVL slowly falls to the set value of 55.2V.
After a short time the value rises to 55.4V and falls to 55.1V.

After the update to V3.01, the result was the same.

cerbo gx
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mrfrodo avatar image
mrfrodo answered ·

Dear Mr. @mvader (Victron Energy),

please notice my post above.

Thank you.

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Guy Stewart (Victron Community Manager) avatar image Guy Stewart (Victron Community Manager) ♦♦ commented ·

Hi @MrFrodo,

We have to be very clear on this point that Victron offers no support for 3rd party DIY BMS systems.

It is fine to discuss in the modifications space, but please do not ask for help from Victron.

This is documented here on our battery compatibility guide.

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