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michelbeausejour avatar image
michelbeausejour asked

MPPT Temperature compensation setting

Batteries.pdf

According to the battery profile document attached, what should be my temperature compensation setting for 2 x 6 volts wired in series? I have an SmartSolar MPPT 100-50.

Thanks!

temperature compensation
batteries.pdf (307.4 KiB)
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Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @MichelBeausejour

from your document:

Please note the voltage settings displayed in the IUI with Pulse Termination Charge Prole graph, corresponds to the set points at 25°C (77°F). For temperatures below 25°C, adjust +0.005VPC/°C . For temperatures above 25°C, adjust -0.005VPC/°C

VPC = Volt Per Cell

so for 6 cells, multiply by 6 (0,03V/C)

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michelbeausejour avatar image michelbeausejour commented ·

Thanks @Daniël Boekel (Victron Energy Staff). I thought that I should be using the values from the IUU profile. Am I not correct?

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Daniël Boekel (Victron Energy Staff) avatar image Daniël Boekel (Victron Energy Staff) ♦♦ michelbeausejour commented ·

What values?

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michelbeausejour avatar image michelbeausejour Daniël Boekel (Victron Energy Staff) ♦♦ commented ·

The absorption and float voltages as well as the temperature compensation.

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