question

Russell Brown avatar image
Russell Brown asked

Multiplus II not charging stays in float when battery needs charge

Have a Multiplus II and 400AH lithium, Cerbo GX, Lynx smart shunt.

Multiplus charging when hooked to shore power was working fine. For some reason now even when battery was say 89%, I plug into shore power expecting the Multuplus to bulk charge, it just stays at "Float" mode.

When battery was very low 30% it did charge as normal. I have tried switching the Multiplus off, back to ON, to charge only, makes no difference.

Any ideas why its not switching to bulk charge mode ?

Multiplus-II
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3 Answers
mvas avatar image
mvas answered ·

Check the "Conditional AC Input Control" feature.

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Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

Wrong settings for the charger? Wrong settings for the shunt?

Please make some screenshots of the settings.

What battery do you have exactly?

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klim8skeptic avatar image
klim8skeptic answered ·

New Lynx Smart BMS video, might hold some clues for the OP.

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