Hi I have a mppt smart solar and a smart battery sense, so do I have to manually set the temperature compensation or will the mppt do this automatically if I set the values for my batteries at 25c?

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philv asked May 11, '22

Hi I have a mppt smart solar and a smart battery sense, so do I have to manually set the temperature compensation or will the mppt do this automatically if I set the values for my batteries at 25c?

MPPT Controllers Temperature Sensor temperature compensation

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Answer 1 · 2022-05-11T12:50:41Z

klim8skeptic answered · May 11, 2022 at 12:50 PM

Perhaps you could mention your battery make / type?

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Answer 2 · 2022-05-11T13:20:43Z

philv answered · May 11, 2022 at 01:20 PM

I have rolls AGM batteries in 24v

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klim8skeptic ♦ commented · May 12, 2022 at 01:22 AM

You are lucky, Rolls have a very good User Manual.

Page 25 gives Bulk/absorb and float voltages, as well as the temp compensation figure of 4mV / °C / Cell. -24mV for a 12v battery, -48mV for a 24v battery

You will have to change the temp compensation figure in the mppt, as Victron use the figure of -16mV.

Mppt manual, Follow the instructions.

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philv klim8skeptic ♦ commented · May 18, 2022 at 04:20 PM

Thanks

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