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SunSynk reduces power to battery when exporting to grid

Hi.


My SunSynk 5kW inverter reduces power to the battery when I enable solar export to grid. I would like it to prioritise maximum charge into the battery before exporting. Can anyone advise if this is something that can be solved in the settings short of manually turning on export after first getting the battery well charged every day?


For example when there's a surplus of 2kW after loads, with export disabled, it is charging the battery with 2kW. When I enable export it reduces that to 0.75W and exports 1.25kW.


Here are the settings in two examples:



This chart shows the effect this has on a typical day's charge pattern:


This is an analysis of some data showing that when exporting, it starts dumping to the grid well before reaching the maximum charge rate that would be reached when not exporting.


PS: The state of charge does not make a difference to this pattern so it's not about optimising charge current. Turning Priority Load on and off does not make a difference. I have the latest firmware upgade.


Thanks in advance

FBJ

339 Views
motogpwade
Feb 20, 2023

Planning to export excess solar yes.

I'm not sure the difference between ecco and standard, think there pretty much the same

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