EVCS showing wrong SOC (always 100%)

Q&A and troubleshooting EVCS
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1

Hi,

my EVCS is showing the wrong SOC, resulting in strange Automode behavior.

It always shows 100%.

EVCS firmware: 2.04

Cerbo firmware: 3.66

It seems that communication between Cerbo and EVCS is fine.

Any idea what could be wrong?

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2

that’s because you have enabled the virtual battery. Check the EVCS settings

3

Ok, I assume you ment “Backup battery emulation”, well that solved the issue, thanks.

But: Unfortunately I am still struggling to get my EVCS doing the things I want (without using Node Red):

  • 3-Phase ESS connected to Grid (no DESS), set to -zero feed in-
  • Stop charging the car when home battery is below 50%
  • Restart charging when home battery is above 70%
  • NEVER feed from Grid
  • Charge, even if Solar is not sufficient (until battery reaches 50%)
  • Auto mode always enabled

In genaral: My setup is aiming to reduce feed from and to grid to be absolutely minimized.

Just want to plug in my car, and charging should start even if there is no/not enough sun, until battery is drained to 50%.

This does not seem to be a foreseen scenario with EVCS.

4

  • First one, yes, that’s not needed for auto mode to work, you can disable feed in.

  • next one- only offgrid

  • that can be configured

  • not sure whant you mean by “feed from the gid”
    Automatic mode is designed for using excess PV, not the battery. There are some extra setting that can be enabled for but those are controling for how long the charging can continue from grid or battery when there is not enough PV.

But you can design a custom setup in node-red, yes.