High current in float mode MPPT 100/30

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eliot asked Jun 30, '21

High current in float mode MPPT 100/30

Hi everyone,

The MPPT in float is charging the battery with 9.3A. How is it possible ? It is a 100/30 smartsolar. He is connected to 2 175W pannels en series with battery voltage of 12V.

Here are some more information :

MPPT SmartSolar float

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Alexandra ♦ commented · Jun 30, 2021 at 02:12 PM

@Eliot
What batteries do you have and how large is you battery bank?

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eliot Alexandra ♦ commented · Jul 01, 2021 at 07:31 AM

It is a bank of 3 lead acid batteries of 95Ah each (Hankook).

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Modifications Space

Node Red Space

Answer 1 · 2021-06-30T16:20:41Z

rslifkin answered · Jun 30, 2021 at 04:20 PM

It's quite possible for a battery to accept that much current in float if the switch from absorption to float occurred too early. It's also possible you have some loads drawing from the battery, in which case the MPPT is powering them (and that output will show as current going to the battery on the MPPT display).

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