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Fra avatar image
Fra asked

VICTRON temperature compensation graph

Hallo, I can't understand the temperature compensation graph in vicyron Mppt manual.

screenshot-2022-10-15-11-45-05-427-comgoogleandroi.jpgImage Caption

I understand why at above or below certain temperature it stops the compensation.

But I don't understand why between 50.and 60 C, it totally stop the charging, and then it resume the charging without compensation above 60 C!!


At the same way I don't understand why below -30C, it not only block the compensation,but it eliminates the compensation and charge at 25C voltage.

It's a very strange settings.

I now some Mppt controller permit to set 2 limit voltages for compensation. So , simply above and below certain temperatures,they stop the increase and decrease of voltage.

Thanks you

temperature compensation
screenshot-2022-10-15-11-45-05-427-comgoogleandroi.jpg (356.4 KiB)
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klim8skeptic avatar image klim8skeptic ♦ commented ·
@Fra I literally have hundreds of datasheets / manuals on my computer.

Please provide an up to date link to your manual. Plz.

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Fra avatar image Fra klim8skeptic ♦ commented ·
Hallo. You can say these graph in any victron Smartsolar Mppt manual on victron website. I have the 100/30.
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Mike Dorsett avatar image
Mike Dorsett answered ·

There is nothing like this in the 100/50 manual.

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Fra avatar image Fra commented ·

yes ... I invented it myself and I did it with Photoshop


https://www.victronenergy.com/media/pg/Manual_SmartSolar_MPPT_100-30__100-50/it/configuration-and-settings.html



Page .21


https://www.victronenergy.com/upload/documents/Manual_SmartSolar_MPPT_100-30__100-50/29694-MPPT_solar_charger_manual-pdf-it.pdf?_ga=2.253099211.359019623.1671453171-1616509464.1671453171



In English....


https://www.victronenergy.com/upload/documents/Manual_SmartSolar_MPPT_100-30__100-50/29694-MPPT_solar_charger_manual-pdf-en.pdf




Victron Community is the worst tech-assistance service ever seen in my life....

A amateur-forum like official tech-assistance????

A worldwide company, moreover, also expensive.

Many cheaper China company have a much better official tech-assistance. With official mail-reply by engineers employees.


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biborado avatar image biborado Fra commented ·

@Fra did you ever figure out why Victron MPPTs do this? I'm having the same issue and it's causing the vehicle mounted lead-acid battery to be severely drained during the day. By the time the battery temp decreases to below 48C, there may not be enough sunlight left to fully charge the battery.

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