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Configuring Sunsynk 5.5Kwh Inverter with 100Ah Gel batteries

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I am trying to configure 4 x 100Ah SOSolar Gel batteries to be used with my Sunsynk 5.5Kwh Inverter.

Can anyone help with the settings required as per the settings picture below?

Synsynk Setup - all 3 tables v1.jpg

My Batteries in Series.jpg

Sunsynk 2.jpg

Hi @Marcodp,

Welcome to the forum.

4 x 100Ah in series is still 100Ah, as only the voltage adds up ( to 48V).

Charge/discharge/float/absorption/equilization parameters should all be set to the manufacturer recommended settings. If you don't have those, just Google the battery model number. 

I'm sure more will add to this to get you going soon. 

  • Author

Thank You, I managed to get hold of the manufacturers spec sheet (as per below pic)

I have set the settings as follows:

Charge: 25Ah

Discharge: 75Ah (This was listed in the Sunsynk manual for 100Ah batteries - not sure how accurate this is?)

Float V: 55.2

Absorption V: 57.6

Equalisation V: 58.4

Shutdown: 48V

Low Battery: 48.8V

Restart: 49.6V

These settings seam to work, however I am still not sure about the Shutdown, Low Battery and Restart settings - can anyone help/confirm what these should be?

The battery manufacturer stipulates that the battery should not be drained below 50% and that the cut-off be set at 12.2v

Thanks again

SOSolar 100Ah.png

Edited by Marcodp

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