Maintaining 100% SOC until end of scheduled charging window

DIY
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1

Hi community,

I have a minor, but annoying issue with my ESS setup.

During scheduled charging (from cheap overnight power), my system happily fills up to 100%, but then it stops charging and begins to discharge the batteries as soon as 100% is reached.

I would like to find a way to continue using grid power (sustain mode?) for all loads until the end of the scheduled charging window. I currently lose about 5% battery capacity on a typical night before the window closes.

Thanks in advance!

2

Switch to „keep batteries charged“ via Nodered or something?

Edit:

The HACS integration in Home Assistant could do it as well:

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3

Ah - it turns out I am being stupid, the time on my VRM system is wrong - although on the console it is right. It seems to be using the time according to VRM to run the schedule, even though this is presumably being carried out by venus on my cerbo. I cannot find a place where the time on VRM can be changed. Any ideas?

4

In VRM the setting seems to be dependent if you have set the time and timezone in the Cerbo - if it is set there, setting your location in VRM won’t override that - if it is unset, the time depends on the location. At least that’s what the explanation there is showing.