question

darkwroth avatar image
darkwroth asked

Mppt 100//20 equalization won’t exceed absorption voltage

When starting my equalization, the voltage won’t go above absorption limit. EQ should be as 16.2, absorption is at 14.8. Once it starts it won’t go above 14.8, unless I change the absorption limit in the settings. Thoughts? (Yes, these are the correct voltages per battery manufacturer support)

Firmware v1.53

16BE6CFB-6BA8-4413-84F6-3AE4C8E94D64.png

battery chargingMPPT SmartSolar
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Alexandra avatar image Alexandra ♦ commented ·

@Darkwroth

Have you tried when your solar has a better yeild?

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1 Answer
manfred-gr avatar image
manfred-gr answered ·

I have the same problem, 24V system with the same Mppt 100/20. Updated firmware, Absorption voltage set to 28.8V, Equalization to 32V. Automatic equalization is set to every 30 days. But the max voltage never rises above 28.3V (temperature compensation?).

Even when I do manual equalization, with enough sunshine and low demand, it never rises higher.

What could prevent Equalization to properly work?

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