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Paul Simon avatar image
Paul Simon asked

MPPT current reduction at low temperature - hex protocol

Hi to all!

The documentation of the ve.direct hex protocol mentions a settings register with the name "Low temperature charge current". Its address is 0xEDE6 (in big endian notation - so bytes need to be reversed when sending a command). And there is another register with the name "Battery low temperature level" and address 0xEDE0.

Since these settings are a bit poorly documented I wanted to ask: If I set "Low temperature charge current" to 5A and "Battery low temperature level" to 5°C will the charger reduce its charging current to 5 Amps at Temperatures below 5°C - provided it receives battery temperature readings from a BMV or SmartShunt?

The two corresponding commands would then be :8E6ED00320048 to set the current limit and :8E0ED00F4018B to set the temperature, right?

Thanks!

MPPT Controllers
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kevgermany avatar image kevgermany ♦♦ commented ·
@Paul Simon

Moved to modifications. Better here

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Paul Simon avatar image Paul Simon kevgermany ♦♦ commented ·
What? This is not a modification. This is just a rather poorly documented feature.
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